[CI] Revise the Windows skip logic of UT

[libohao1201]

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[Copilot]

Pull Request Overview

This PR revises the Windows skip logic for unit tests by improving how skip lists are handled and fixing file patterns. The changes ensure empty lists are properly handled as None values and correct the file skip pattern format.

Key Changes:

• Updated skip list validation to check for both truthiness and non-empty lists
• Fixed the skip pattern from ".py::" to ".py" for entire file skipping
• Added handling for None and tuple values in skip dictionary merging

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
test/xpu/xpu_test_utils.py	Added length checks to skip_list and exe_list validation to ensure empty lists are treated properly
test/xpu/windows_skip_cases.py	Corrected dictionary key from "test_decomp" to "test_decomp.py" and updated skip pattern format
test/xpu/run_test_with_skip.py	Fixed import statement, updated file skip pattern detection, added handling for None/tuple values in skip dict, and added empty list normalization

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[Copilot]

[nitpick] The nested if-elif-else logic can be simplified. When skip_dict[key] is None or falsy, all branches result in an empty list. Consider consolidating: merged_skip_dict[key] = list(skip_dict[key]) if isinstance(skip_dict[key], tuple) else (skip_dict[key].copy() if skip_dict[key] else [])

Suggested change

	if skip_dict[key] is None:
	merged_skip_dict[key] = []
	elif isinstance(skip_dict[key], tuple):
	merged_skip_dict[key] = list(skip_dict[key])
	else:
	merged_skip_dict[key] = skip_dict[key].copy() if skip_dict[key] else []
	merged_skip_dict[key] = list(skip_dict[key]) if isinstance(skip_dict[key], tuple) else (skip_dict[key].copy() if skip_dict[key] else [])

[daisyden]

skip_cases argument is for both linux and windows, right? Why import windows_skip_cases when skip_cases is true?