fix: remove deprecated pandas >= 2.2 args from PandasTableReader

[VinayakMaharaj]

Fixes #1417

PandasTableReader._get_loading_kwargs() uses dataclasses.asdict(self) which dumps all fields directly as kwargs to pd.read_table(), including deprecated arguments that trigger FutureWarning on pandas >= 2.2.

Changes

• Added version-aware filtering in PandasTableReader._get_loading_kwargs() to strip deprecated kwargs (verbose, keep_date_col, delim_whitespace) when running pandas >= 2.2
• Replaces delim_whitespace=True with sep=r"\s+" as recommended by pandas docs

How I tested this

Verified the deprecated fields are stripped at runtime on pandas >= 2.2 by inspecting the kwargs dict. The existing test suite covers the CSV/table reader behavior.

Notes

PandasCSVReader already had version guards for these same args — this brings PandasTableReader in line with the same pattern.

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any_change_in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality