Type all str/repr dunders #5368

Job	Run time
test_cygwin (39, windows-latest)	15m 39s
collateral (diffcov)	5m 17s
test (3.8, ubuntu-latest)	4m 1s
collateral (docs)	1m 59s
test (3.8, windows-latest)	13m 21s
test (3.12, ubuntu-latest)	5m 8s
test (3.12, macos-latest)	4m 5s
test (3.12, windows-latest)	12m 59s
test (3.9, ubuntu-latest)	4m 3s
test (3.10, ubuntu-latest)	3m 55s
test (3.11, ubuntu-latest)	3m 46s
test (pypy3.10, ubuntu-latest, stdlib)	11m 50s
test (ubuntu-latest, 3.10, stdlib)	3m 46s
test (3.8, macos-13)	6m 37s
integration-test	0s
check	2s
release	0s
	1h 36m 28s

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