[C++][Parquet] Unused `chunk_size` parameter in `parquet::arrow::FileWriter::NewRowGroup()`

[kszucs]

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

The implementation doesn't use the chunk_size parameter.

Component(s)

C++, Parquet

[raulcd]

Issue resolved by pull request 45088
#45088