[Python][Docs] ChunkedArray.to_numpy() sets the OWNDATA and WRITEABLE flags to False

### Describe the bug, including details regarding any error messages, version, and platform.

```python
pa.chunked_array([[1.1]]).to_numpy(zero_copy_only=False).flags
```
Results in:
```
C_CONTIGUOUS : True
F_CONTIGUOUS : True
OWNDATA : False
WRITEABLE : False
ALIGNED : True
WRITEBACKIFCOPY : False
```

The [docs](https://arrow.apache.org/docs/python/generated/pyarrow.ChunkedArray.html#pyarrow.ChunkedArray.to_numpy) say: _"Introduced for signature consistence with pyarrow.Array.to_numpy. This must be False here since NumPy arrays’ buffer must be contiguous."_

As we are returning a copy, OWNDATA and WRITEABLE should be True.

PyArrow version: 14.0.1
Numpy version: 1.26.0

### Component(s)

Python