Handle typing.Generic case in MRO #2701

Job	Run time
unit_tests (pypy-3.9, ubuntu-latest)	5m 25s
unit_tests (pypy-3.9, windows-latest)	9m 56s
unit_tests (pypy-3.9, macos-latest)	4m 26s
unit_tests (pypy-3.10, ubuntu-latest)	4m 45s
unit_tests (pypy-3.10, windows-latest)	7m 37s
unit_tests (pypy-3.10, macos-latest)	3m 48s
unit_tests (3.9, ubuntu-latest)	1m 44s
unit_tests (3.9, windows-latest)	2m 50s
unit_tests (3.9, macos-latest)	1m 46s
unit_tests (3.10, ubuntu-latest)	1m 49s
unit_tests (3.10, windows-latest)	3m 3s
unit_tests (3.10, macos-latest)	1m 37s
unit_tests (3.11, ubuntu-latest)	1m 46s
unit_tests (3.11, windows-latest)	3m 26s
unit_tests (3.11, macos-latest)	1m 18s
unit_tests (3.12, ubuntu-latest)	2m 21s
unit_tests (3.12, windows-latest)	3m 45s
unit_tests (3.12, macos-latest)	1m 29s
unit_tests (3.13, ubuntu-latest)	2m 22s
unit_tests (3.13, windows-latest)	4m 5s
unit_tests (3.13, macos-latest)	1m 42s
release	6s
GHA Required	3s
	1h 11m 9s

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