Error processing very long words

We've tried to process a document from MS Marco dataset that has the word with length about 190k characters.

The processing has failed. The document is attached.

✗ Error processing C:\msmarco-v2 Top 0 - 5k files\'Longest' word has 189,819 letters, takes three hours to pronounce.docx: Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\venv\Scripts\markitdown.exe\__main__.py", line 6, in <module>
    sys.exit(main())
             ~~~~^^
  File "C:\venv\Lib\site-packages\markitdown\__main__.py", line 91, in main
    result = markitdown.convert(args.filename)
  File "C:\venv\Lib\site-packages\markitdown\_markitdown.py", line 1563, in convert
    return self.convert_local(source, **kwargs)
           ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "C:\venv\Lib\site-packages\markitdown\_markitdown.py", line 1587, in convert_local
    return self._convert(path, extensions, **kwargs)
           ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\venv\Lib\site-packages\markitdown\_markitdown.py", line 1731, in _convert
    raise FileConversionException(
        f"Could not convert '{local_path}' to Markdown. File type was recognized as {extensions}. While converting the file, the following error was encountered:\n\n{error_trace}"
    )
markitdown._markitdown.FileConversionException: Could not convert 'C:\msmarco-v2 Top 0 - 5k files\'Longest' word has 189,819 letters, takes three hours to pronounce.docx' to Markdown. File type was recognized as ['.docx', '.wb3', '.doc', '.spo', '.opt', '.rvt', '.vsd', '.msi', '.pub', '.mtw', '.ac_', '.dot', '.pps', '.ppt', '.xla', '.xls', '.wiz', '.sou', '.wps', '.apr', '.msc', '.adp', '.db', '.wdb', '.xlr']. While converting the file, the following error was encountered:
 
Traceback (most recent call last):
  File "C:\venv\Lib\site-packages\markitdown\_markitdown.py", line 1715, in _convert
    res = converter.convert(local_path, **_kwargs)
  File "C:\venv\Lib\site-packages\markitdown\_markitdown.py", line 779, in convert
    sheets = pd.read_excel(local_path, sheet_name=None, engine="xlrd")
  File "C:\venv\Lib\site-packages\pandas\io\excel\_base.py", line 495, in read_excel
    io = ExcelFile(
        io,
    ...<2 lines>...
        engine_kwargs=engine_kwargs,
    )
  File "C:\venv\Lib\site-packages\pandas\io\excel\_base.py", line 1567, in __init__
    self._reader = self._engines[engine](
                   ~~~~~~~~~~~~~~~~~~~~~^
        self._io,
        ^^^^^^^^^
        storage_options=storage_options,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        engine_kwargs=engine_kwargs,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "C:\venv\Lib\site-packages\pandas\io\excel\_xlrd.py", line 46, in __init__
    super().__init__(
    ~~~~~~~~~~~~~~~~^
        filepath_or_buffer,
        ^^^^^^^^^^^^^^^^^^^
        storage_options=storage_options,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        engine_kwargs=engine_kwargs,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "C:\venv\Lib\site-packages\pandas\io\excel\_base.py", line 573, in __init__
    self.book = self.load_workbook(self.handles.handle, engine_kwargs)
                ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\venv\Lib\site-packages\pandas\io\excel\_xlrd.py", line 63, in load_workbook
    return open_workbook(file_contents=data, **engine_kwargs)
  File "C:\venv\Lib\site-packages\xlrd\__init__.py", line 172, in open_workbook
    bk = open_workbook_xls(
        filename=filename,
    ...<8 lines>...
        ignore_workbook_corruption=ignore_workbook_corruption,
    )
  File "C:\venv\Lib\site-packages\xlrd\book.py", line 68, in open_workbook_xls
    bk.biff2_8_load(
    ~~~~~~~~~~~~~~~^
        filename=filename, file_contents=file_contents,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<5 lines>...
        ignore_workbook_corruption=ignore_workbook_corruption
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "C:\venv\Lib\site-packages\xlrd\book.py", line 645, in biff2_8_load
    raise XLRDError("Can't find workbook in OLE2 compound document")
xlrd.biffh.XLRDError: Can't find workbook in OLE2 compound document

'Longest' word has 189,819 letters, takes three hours to pronounce.docx

Start in markitdown/_markitdown.py at _convert and the converter path reached from convert_local; the traceback shows the attached DOCX being sent to pandas.read_excel with engine="xlrd". Reproduce with the attached document and trace converter selection. Done means the document processes without the incorrect Excel-conversion failure.