Fix filter_name type consistency between getter and setter methods

[Copilot]

Description

Addresses feedback from #598 regarding inconsistent type annotations for filter_name parameter.

Changes:

• Updated get_attr_from_every_element type annotation from str | None to str | tuple[str] | None to match set_attrs_on_every_element
• Fixed filter logic to properly handle string equality vs tuple membership (prevents substring matching bug when using single string)
• Updated docstrings to clarify parameter accepts single name or tuple of names

Before (buggy):

# "d" would incorrectly match "d1" due to substring check
filter_name is None or element.name in filter_name

After:

filter_name is None
or (isinstance(filter_name, str) and element.name == filter_name)
or (isinstance(filter_name, tuple) and element.name in filter_name)

Motivation and Context

Original PR: #598
Triggering review: #598 (comment)

• I have raised an issue to propose this change (required for new features and bug fixes)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)

Checklist

• I have updated the changelog accordingly (required).
• My change requires a change to the documentation.
• I have updated the tests accordingly (required for a bug fix or a new feature).
• I have updated the documentation accordingly.
• I have reformatted the code and checked that formatting passes (required).
• I have have fixed all issues found by flake8 (required).
• I have ensured that all pytest tests pass (required).
• I have run pytest on a machine with a CUDA GPU and made sure all tests pass (required).
• I have checked that the documentation builds (required).

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