Handle typing.Generic case in MRO #2682

Job	Run time
unit_tests (pypy-3.9, ubuntu-latest)	5m 19s
unit_tests (pypy-3.9, windows-latest)	10m 43s
unit_tests (pypy-3.9, macos-latest)	5m 35s
unit_tests (pypy-3.10, ubuntu-latest)	4m 47s
unit_tests (pypy-3.10, windows-latest)	7m 46s
unit_tests (pypy-3.10, macos-latest)	4m 15s
unit_tests (3.9, ubuntu-latest)	1m 46s
unit_tests (3.9, windows-latest)	3m 10s
unit_tests (3.9, macos-latest)	1m 43s
unit_tests (3.10, ubuntu-latest)	1m 47s
unit_tests (3.10, windows-latest)	2m 53s
unit_tests (3.10, macos-latest)	1m 39s
unit_tests (3.11, ubuntu-latest)	1m 49s
unit_tests (3.11, windows-latest)	3m 42s
unit_tests (3.11, macos-latest)	1m 20s
unit_tests (3.12, ubuntu-latest)	2m 16s
unit_tests (3.12, windows-latest)	3m 30s
unit_tests (3.12, macos-latest)	1m 23s
unit_tests (3.13, ubuntu-latest)	2m 20s
unit_tests (3.13, windows-latest)	4m 10s
unit_tests (3.13, macos-latest)	1m 27s
release	8s
GHA Required	1s
	1h 13m 29s

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