gh-137228: Improve get_type_hints() #137230
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The previous behavior was copied from earlier typing code. It works around the way typing.get_type_hints passes its namespaces, but I don't think the behavior is logical or correct.
This fixes the two incorrect behaviors flagged in python#137228 and more generally makes get_type_hints() lean more into using the owner concept from annotationlib instead of trying to infer globals and locals namespaces itself.
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This fixes the two incorrect behaviors flagged in #137228 and more generally makes get_type_hints() lean more into using the owner concept from annotationlib instead of trying to infer globals and locals namespaces itself.