fix: preserve suffix filtering in _path2list when path is a list of S3 paths

[hsusul]

Description

This PR fixes a bug in _path2list (awswrangler/s3/_list.py) where passing a list of S3 object paths (path=[...]) with a suffix filter (e.g., suffix=".parquet") ignored the suffix filtering whenever ignore_suffix was None (the default).

Root Cause

In _path2list, line 57 filters the input path list according to _suffix into paths.
Line 58 then assigned paths = path if _ignore_suffix is None else .... When _ignore_suffix is None, it assigned paths = path (the raw unfiltered list), discarding the filtered list produced on line 57.

Solution

Change paths = path if _ignore_suffix is None ... to paths = paths if _ignore_suffix is None ... so the result of suffix filtering is preserved.

Tests Added

Added test_path2list_suffix_with_list_of_paths in tests/unit/test_moto.py covering:

1. suffix filtering on a list of S3 paths with ignore_suffix=None.
2. Multiple suffixes as a list with a list of S3 paths.
3. Combination of suffix and ignore_suffix with a list of S3 paths.

Validation Results

• uv run pytest tests/unit/test_moto.py: 47 passed.
• uv run ruff format --check: Passed.
• uv run ruff check: Passed.
• git diff --check: Passed.
• Live AWS integration tests were skipped; tests were verified locally using moto.