feat: Add iter_matching_types function

[remimd]

No description provided.

[Copilot]

Pull request overview

This PR introduces a new public iter_matching_types function that returns an iterator of matching types, refactoring the existing matching_types function to use it internally. This provides users with a lazy evaluation option when they don't need all matching types materialized into a tuple.

• Adds iter_matching_types as a new public API that returns an iterator
• Refactors matching_types to delegate to iter_matching_types
• Renames internal helper _is_none to _is_none_type for clarity
• Removes skipped tests and cleans up pytest configuration

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
type_analyzer/_core/matching_types.py	Adds iter_matching_types function, refactors matching_types to use it, renames _is_none to _is_none_type, makes config parameter required in _iter_matching_types
type_analyzer/init.py	Exports new iter_matching_types function in public API
tests/core/test_matching_types.py	Removes skipped tests and unused imports
pyproject.toml	Removes pytest temporary path retention configuration

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