save_as_vtk fails for RST file (ansys.mapdl.reader)

### Before submitting the issue

- [X] I have visited the Troubleshooting section.
- [X] I have searched among the existing issues.
- [X] I am using a Python virtual environment.
- [X] I have a fully updated virtual environment (i.e. ``pip install --upgrade --upgrade-strategy eager ansys-mapdl-core``)

### Description of the bug

I have a rst file (size approx 2 GB) for which I would like to export the results to VTK/VTU file format. The rst file contains 4 static loadcases which where solved with Ansys MAPDL 18.x.

I can read the RST file and plot results. Yet, result.save_as_vtk() leads to an exception in PyVista as follows:
ValueError: data length of (151876) != required length (161175)

The demo files provided by PyAnsys work well and export the data to VTK/VTU format as expected.

### Steps To Reproduce

Code as follows:

```py
rName = "c:\\_workspaces\\221206-Rev00.rst"
rOut = "c:\\_tmp\\result.vtu"
rst = reader.read_binary(rName)
rst.plot_nodal_displacement(0)
rst.plot_principal_nodal_stress(0,'SEQV')
rst.save_as_vtk(rOut)

```

leads to the following error:
```py
File "C:\\scratch.py", line 13, in
rst.save_as_vtk(rOut)
File "C:\...\venv\lib\site-packages\ansys\mapdl\reader\rst.py", line 3363, in save_as_vtk
grid.point_data['Nodal Solution {:d}'.format(i)] = val
File "C:\...\venv\lib\site-packages\pyvista\core\datasetattributes.py", line 227, in __setitem__
self.set_array(value, name=key)
File "C:\...\venv\lib\site-packages\pyvista\core\datasetattributes.py", line 613, in set_array
vtk_arr = self._prepare_array(data, name, deep_copy)
File "C:\...\venv\lib\site-packages\pyvista\core\datasetattributes.py", line 769, in _prepare_array
raise ValueError(f'data length of ({data.shape[0]}) != required length ({array_len})')
ValueError: data length of (151876) != required length (161175)
```

### Which Operating System are you using?

Windows

### Which Python version are you using?

3.9

### PyMAPDL Report

Show the Report!

```text

PyMAPDL Software and Environment Report

Packages Requirements
*********************

Core packages
-------------
ansys.mapdl.core : 0.63.4
numpy : 1.24.1
appdirs : 1.4.4
scipy : 1.10.0
grpc : Package not found
ansys.api.mapdl.v0 : Package not found
ansys.mapdl.reader : 0.52.6
google.protobuf : Package not found

Optional packages
-----------------
matplotlib : 3.6.2
pyvista : 0.37.0
pyiges : 0.2.1
tqdm : 4.64.1

```

### Installed packages

Show the installed packages!

```text

acoustics==0.2.6
adodbapi==2.6.1.3
affine==2.3.0
aiofiles==0.8.0
aiohttp==3.8.1
aiosignal==1.2.0
aiosqlite==0.17.0
alabaster==0.7.12
alembic==1.7.5
algopy==0.5.7
altair==4.2.0
altair-data-server==0.4.1
altair-transform==0.2.0
altair-widgets==0.2.2
altgraph==0.17.2
amply==0.1.4
aniso8601==7.0.0
ansiwrap==0.8.4
ansys-api-mapdl==0.5.1
ansys-api-platform-instancemanagement==1.0.0b3
ansys-corba==0.1.0
ansys-mapdl-core==0.63.4
ansys-mapdl-reader==0.52.6
ansys-platform-instancemanagement==1.0.2
anyio==3.5.0
apgl==0.8.1
appdirs==1.4.4
argon2-cffi==21.3.0
argon2-cffi-bindings==21.2.0
arrow==1.2.1
asciitree==0.3.3
asgi-csrf==0.9
asgiref==3.4.1
asn1crypto==1.4.0
asteval==0.9.26
astor==0.8.1
astroid==2.9.3
astroML==1.0.1
astropy==4.3.1
async-generator==1.10
async-timeout==4.0.2
atomicwrites==1.4.0
attrs==21.4.0
audioread==2.1.9
autopep8==1.6.0
Babel==2.9.1
backcall==0.2.0
backports-abc==0.5
baresql==0.7.6
base58==2.1.1
bcrypt==3.2.0
beautifulsoup4==4.10.0
binaryornot==0.4.4
black==21.12b0
bleach==4.1.0
blinker==1.4
blis==0.7.5
blosc==1.10.6
bokeh==2.4.2
botorch==0.4.0
Bottleneck==1.3.2
bqplot==0.12.32
branca==0.4.2
brewer2mpl==1.4.1
Brotli==1.0.9
cachelib==0.5.0
cachetools==5.0.0
Cartopy==0.20.2
catalogue==2.0.6
certifi==2022.12.7
cffi==1.15.0
cftime==1.5.1.1
chardet==4.0.0
charset-normalizer==2.1.1
click==7.1.2
click-default-group==1.2.2
click-plugins==1.1.1
cligj==0.7.2
cloudpickle==2.0.0
clr-loader==0.1.7
clrmagic==0.0.1a2
colorama==0.4.6
colorcet==3.0.0
colorlog==6.6.0
configobj==5.0.6
contourpy==1.0.6
cookiecutter==1.7.3
coverage==6.2
cramjam==2.5.0
cryptography==35.0.0
csvs-to-sqlite==1.3
cvxopt==1.2.7
cvxpy==1.1.18
cx-Freeze==6.9
cx-Logging==3.0
cycler==0.11.0
cymem==2.0.6
Cython==0.29.26
cytoolz==0.11.0
dash==2.0.0
dash-core-components==2.0.0
dash-html-components==2.0.0
dash-table==5.0.0
dask==2022.1.0
dask-glm==0.2.0
dask-image==2021.12.0
dask-labextension==5.2.0
dask-ml==2021.11.30
dask-searchcv==0.2.0
databases==0.4.1
datasette==0.60
datasette-graphql==1.5
datashader==0.13.0
datashape==0.5.2
dateparser==1.1.0
db.py==0.5.4b1
debugpy==1.5.1
decorator==4.4.2
defusedxml==0.7.1
Deprecated==1.2.13
deprecation==2.1.0
descartes==1.1.0
diff-match-patch==20200713
distlib==0.3.4
distributed==2022.1.0
docopt==0.6.2
docrepr==0.1.1
docutils==0.17.1
easydev==0.12.0
ecos==2.0.10
emcee==3.1.1
entrypoints==0.3
enum34==1.1.10
et-xmlfile==1.1.0
fast-histogram==0.10
fastai==2.5.3
fastapi==0.71.0
fastcore==1.3.27
fastdownload==0.0.5
fasteners==0.17.2
fastparquet==0.7.2
fastprogress==1.0.0
feather-format==0.4.1
filelock==3.4.2
Fiona==1.8.20
flake8==4.0.1
Flask==2.0.2
flask-accepts==0.18.4
Flask-Compress==1.10.1
Flask-Mail==0.9.1
flask-restx==0.5.1
Flask-Session==0.4.0
Flask-SQLAlchemy==2.5.1
flaskerize==0.14.0
flatbuffers==2.0
flit==3.6.0
flit_core==3.6.0
folium==0.12.1
fonttools==4.38.0
FormEncode==2.0.1
formlayout==1.2.1a1
frozenlist==1.2.0
fs==2.4.14
fsspec==2022.1.0
future==0.18.2
fuzzywuzzy==0.18.0
GDAL==3.4.1
geographiclib==1.52
geomdl==5.3.1
geopandas==0.10.2
geopy==2.2.0
geoviews==1.9.3
gitdb==4.0.9
GitPython==3.1.26
gmpy2==2.1.2
googleapis-common-protos==1.57.1
gpytorch==1.5.1
graphene==2.1.9
graphql-core==2.3.1
graphql-relay==2.0.1
great-expectations==0.13.41
greenlet==1.1.2
grpcio==1.51.1
guidata==2.0.3
guiqwt==4.0.1
h11==0.12.0
h2==4.1.0
h5py==3.6.0
HeapDict==1.0.1
holoviews==1.14.7
hpack==4.0.0
html5lib==1.1
httpcore==0.14.5
httpie==2.6.0
httpx==0.21.3
hupper==1.10.3
husl==4.0.3
hvplot==0.7.3
hypercorn==0.13.2
hyperframe==6.0.1
hypothesis==6.35.0
idlex==1.22
idna==3.4
imageio==2.23.0
imageio-ffmpeg==0.4.2
imagesize==1.3.0
imbalanced-learn==0.9.0
importlib-metadata==6.0.0
inflection==0.5.1
iniconfig==1.1.1
intake==0.6.4
intervaltree==3.0.2
ipycanvas==0.10.2
ipykernel==6.7.0
ipyleaflet==0.14.0
ipympl==0.8.6
ipython==7.31.0
ipython-genutils==0.2.0
ipython-sql==0.4.1b1
ipywidgets==7.6.5
isort==5.10.1
itsdangerous==2.0.1
janus==1.0.0
jedi==0.18.1
jellyfish==0.9.0
Jinja2==3.0.3
jinja2-time==0.2.0
joblib==1.1.0
json5==0.9.6
jsonpatch==1.32
jsonpointer==2.2
jsonschema==4.4.0
julia==0.5.7
jupyter==1.0.0
jupyter-bokeh==3.0.4
jupyter-client==7.1.1
jupyter-console==6.4.0
jupyter-core==4.9.1
jupyter-lsp==1.5.1
jupyter-packaging==0.11.1
jupyter-server==1.13.4
jupyter-server-mathjax==0.2.3
jupyter-server-proxy==3.2.0
jupyter-sphinx==0.3.2
jupyterlab==3.2.8
jupyterlab-git==0.34.2
jupyterlab-launcher==0.13.1
jupyterlab-lsp==3.10.0
jupyterlab-pygments==0.1.2
jupyterlab-server==2.10.3
jupyterlab-widgets==1.0.2
keyring==23.5.0
kiwisolver==1.4.4
langcodes==3.3.0
lazy-object-proxy==1.7.1
llvmlite==0.38.0
lmfit==1.0.3
locket==0.2.1
loky==3.0.0
lxml==4.7.1
lz4==3.1.10
Mako==1.1.6
Markdown==3.3.6
MarkupSafe==2.0.1
marshmallow==3.12.1
matplotlib==3.6.2
matplotlib-inline==0.1.3
maturin==0.12.6
mccabe==0.6.1
mercantile==1.2.1
mergedeep==1.3.4
metakernel==0.28.2
mistune==0.8.4
mizani==0.7.3
mkl-service==2.4.0
mlxtend==0.18.0
moviepy==1.0.3
mpl-scatter-density==0.7
mpld3==0.5.7
mpldatacursor==0.7.1
mpmath==1.2.1
msgpack==1.0.3
msvc-runtime==14.29.30133
multidict==5.2.0
multipledispatch==0.6.0
munch==2.5.0
murmurhash==1.0.6
mypy==0.931
mypy-extensions==0.4.3
mysql-connector-python==8.0.26
nbclassic==0.3.5
nbclient==0.5.10
nbconvert==6.4.0
nbconvert_reportlab==0.2
nbdime==3.1.1
nbformat==5.1.3
nbval==0.9.6
nest-asyncio==1.5.4
netCDF4==1.5.8
networkx==2.6.4a0
NLopt==2.7.0
nltk==3.6.7
notebook==6.4.7
numba==0.55.0
numcodecs==0.9.1
numdifftools==0.9.40
numexpr==2.8.1
numpy==1.24.1
numpydoc==1.1.0
oct2py==5.4.2
octave-kernel==0.34.0
onnxruntime==1.10.0
openpyxl==3.0.9
orjson==3.6.5
osqp==0.6.2.post4
outcome==1.1.0
packaging==22.0
palettable==3.3.0
pandas==1.4.0
pandas-datareader==0.10.0
pandocfilters==1.5.0
panel==0.12.6
papermill==2.3.3
param==1.12.0
parambokeh==0.2.3
paramiko==2.8.0
paramnb==2.0.4
parso==0.8.3
partd==1.2.0
pathspec==0.9.0
pathy==0.6.1
patsy==0.5.2
pdfrw==0.4.post2
pdvega==0.2.1.dev0
pefile==2021.9.3
pep8==1.7.1
pexpect==4.8.0
pg8000==1.23.0
pickleshare==0.7.5
Pillow==9.4.0
PIMS==0.5
Pint==0.18
pipdeptree==2.2.1
pkginfo==1.8.2
platformdirs==2.4.1
plotly==5.5.0
plotnine==0.8.0
pluggy==1.0.0
ply==3.11
pockets==0.9.1
pooch==1.6.0
portpicker==1.4.0
poyo==0.5.0
ppci==0.5.8
preshed==3.0.6
prettytable==3.0.0
priority==2.0.0
proglog==0.1.9
prometheus-client==0.12.0
promise==2.3
prompt-toolkit==3.0.24
protobuf==3.20.3
protoc-gen-swagger==0.1.0
psutil==5.9.0
ptpython==3.0.20
ptyprocess==0.7.0
PuLP==2.3
py==1.11.0
py-lru-cache==0.1.4
pyaml==20.4.0
pyarrow==6.0.1
PyAudio==0.2.11
pybars3==0.9.7
pybind11==2.9.0
pycodestyle==2.8.0
pycosat==0.6.3
pycparser==2.21
pyct==0.4.8
pydantic==1.8.2
pydeck==0.7.1
pydocstyle==6.1.1
pyepsg==0.4.0
pyerfa==2.0.0.1
pyflakes==2.4.0
pyflux==0.4.17
pygame==2.1.2
pygbm==0.1.0
Pygments==2.11.2
pyhdf==0.10.3
pyiges==0.2.1
pyinstaller==4.8
pyinstaller-hooks-contrib==2021.5
pylint==2.12.2
pyls-spyder==0.4.0
pymc==2.3.8
PyMeta3==0.5.1
pymongo==4.0.1
PyNaCl==1.5.0
pynndescent==0.5.5
pyodbc==4.0.32
PyOpenGL==3.1.5
pypandoc==1.5
pyparsing==3.0.9
pyproj==3.3.0
PyQt5==5.15.1
PyQt5-sip==12.8.1
PyQt5-stubs==5.15.6.0
pyqt5-tools==5.15.1.1.7.5.post3
pyqtgraph==0.12.3
PyQtWebEngine==5.15.1
pyrsistent==0.18.1
pyserial==3.5
pyshp==2.1.3
PySocks==1.7.1
PySoundFile==0.9.0.post1
pystache==0.5.4
pytest==6.2.5
python-baseconv==1.2.2
python-dateutil==2.8.2
python-dotenv==0.19.2
python-hdf4==0.10.0+dummy
python-Levenshtein==0.12.2
python-lsp-black==1.0.1
python-lsp-jsonrpc==1.0.0
python-lsp-server==1.3.3
python-multipart==0.0.5
python-picard==0.7
python-slugify==5.0.2
python-snappy==0.6.0
pythonnet==3.0.0a1
PythonQwt==0.10.1
pytz==2021.3
pytz-deprecation-shim==0.1.0.post0
pyvista==0.37.0
pyviz-comms==2.1.0
PyWavelets==1.2.0
pywin32==303
pywin32-ctypes==0.2.0
pywinpty==1.1.6
pywinusb==0.4.2
PyYAML==6.0
pyzmq==22.3.0
pyzo==4.12.0
pyzstd==0.15.1
QDarkStyle==3.0.2
qdldl==0.1.5.post0
qpsolvers==1.8.0
qstylizer==0.2.1
QtAwesome==1.1.1
qtconsole==5.2.2
QtPy==2.0.0
quadprog==0.1.8
quantecon==0.5.2
quart==0.16.2
rasterio==1.2.10
readme-renderer==32.0
redis==4.1.0
regex==2022.1.18
reportlab==3.6.5
requests==2.28.1
requests-toolbelt==0.9.1
rfc3986==1.5.0
rise==5.7.1
rope==0.22.0
rpy2==3.4.0.dev0
Rtree==0.9.7
ruamel.yaml==0.17.20
ruamel.yaml.clib==0.2.6
Rx==1.6.1
scikit-fuzzy==0.4.1
scikit-image==0.19.1
scikit-learn==1.0.2
scikit-optimize==0.9.0
scilab2py==0.6.2
scipy==1.10.0
scooby==0.7.0
scramp==1.4.1
scs==3.1.0
seaborn==0.11.2
Send2Trash==1.8.0
shap==0.39.0
Shapely==1.8.0
simpervisor==0.4
simplegeneric==0.8.1
simplejson==3.17.6
simpy==4.0.1
six==1.16.0
sklearn-contrib-lightning==0.6.1
slicer==0.0.7
slicerator==1.0.0
smart-open==5.2.1
smmap==5.0.0
snakeviz==2.1.0
sniffio==1.2.0
snowballstemmer==2.2.0
snuggs==1.4.7
sortedcontainers==2.4.0
sounddevice==0.4.4
soupsieve==2.3.1
spacy==3.2.1
spacy-legacy==3.0.8
spacy-loggers==1.0.1
Sphinx==4.4.0
sphinx-epytext==0.0.4
sphinx-readable-theme==1.3.0
sphinx-rtd-theme==1.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-napoleon==0.7
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
spyder==5.2.2
spyder-kernels==2.2.1
SQLAlchemy==1.4.28
sqlite-bro==0.12.1
sqlite-fts4==1.0.1
sqlite-utils==3.22
sqlparse==0.4.2
srsly==2.4.2
starlette==0.17.1
statsmodels==0.13.1
streamlit==1.1.0
streamz==0.6.3
supersmoother==0.4
swifter==1.0.9
sympy==1.9
tables==3.7.0
tabulate==0.8.9
tblib==1.7.0
tenacity==8.0.1
termcolor==1.1.0
terminado==0.12.1
testfixtures==7.0.0
testpath==0.5.0
text-unidecode==1.3
textdistance==4.2.2
textwrap3==0.9.2
thinc==8.0.13
threadpoolctl==3.0.0
three-merge==0.1.1
thrift==0.15.0
tifffile==2021.11.2
tinycss2==1.1.1
toml==0.10.2
tomli==1.2.2
tomli_w==1.0.0
tomlkit==0.8.0
toolz==0.11.2
torch==1.10.1
torchaudio==0.10.1
torchvision==0.11.2
tornado==6.1
tqdm==4.64.1
traitlets==5.1.1
traittypes==0.2.1
transforms3d==0.3.1
trio==0.19.0
trio-asyncio==0.12.0
twine==3.7.1
twitter==1.19.2
typer==0.4.0
typing_extensions==4.0.1
tzdata==2021.5
tzlocal==4.1
ujson==5.1.0
umap-learn==0.5.1
uncertainties==3.1.6
urllib3==1.26.13
uvicorn==0.17.0
validators==0.18.2
vega==3.5.0
vega-datasets==0.9.0
virtualenv==20.13.0
ViTables==3.0.2
voila==0.3.0
vtk==9.2.5
wasabi==0.9.0
wasmer==1.1.0
wasmer_compiler_cranelift==1.1.0
wasmer_compiler_singlepass==1.1.0
watchdog==2.1.5
wavefile==1.5
wcwidth==0.2.5
webencodings==0.5.1
websocket-client==1.2.3
websockets==10.1
Werkzeug==2.0.2
widgetsnbextension==3.5.2
winpython==4.6.20220116
winrt==1.0.21033.1
wordcloud==1.8.1
wrapt==1.13.3
wslink==1.6.4
wsproto==1.0.0
xarray==0.20.2
XlsxWriter==3.0.2
xlwings==0.24.7
xmltodict==0.13.0
yapf==0.32.0
yarl==1.7.2
zarr==2.10.2
zict==2.0.0
zipp==3.11.0
zstandard==0.16.0

```

### Logger output file

_No response_

The failure is reported in ansys/mapdl/reader/rst.py at save_as_vtk around line 3363, where PyVista rejects the Nodal Solution array length. Start by reproducing the supplied reader.read_binary and save_as_vtk sequence; done means the RST example exports to VTK/VTU without the length-mismatch exception.

Written by the indexing model from the issue text.