Handle typing.Generic case in MRO #2697

Job	Run time
unit_tests (pypy-3.9, ubuntu-latest)	5m 1s
unit_tests (pypy-3.9, windows-latest)	9m 37s
unit_tests (pypy-3.9, macos-latest)	5m 4s
unit_tests (pypy-3.10, ubuntu-latest)	5m 2s
unit_tests (pypy-3.10, windows-latest)	8m 18s
unit_tests (pypy-3.10, macos-latest)	4m 7s
unit_tests (3.9, ubuntu-latest)	2m 2s
unit_tests (3.9, windows-latest)	2m 40s
unit_tests (3.9, macos-latest)	2m 11s
unit_tests (3.10, ubuntu-latest)	2m 11s
unit_tests (3.10, windows-latest)	2m 43s
unit_tests (3.10, macos-latest)	1m 37s
unit_tests (3.11, ubuntu-latest)	1m 45s
unit_tests (3.11, windows-latest)	3m 39s
unit_tests (3.11, macos-latest)	1m 46s
unit_tests (3.12, ubuntu-latest)	2m 20s
unit_tests (3.12, windows-latest)	3m 47s
unit_tests (3.12, macos-latest)	1m 35s
unit_tests (3.13, ubuntu-latest)	2m 22s
unit_tests (3.13, windows-latest)	4m 8s
unit_tests (3.13, macos-latest)	2m 18s
GHA Required	2s
release	15s
	1h 14m 30s

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