Instrument Add option to only close specific subclass #22308

Job	Run time
pytestmypy (ubuntu-latest, 3.14, false)	7m 26s
pytestmypy (ubuntu-latest, 3.12, false)	9m 5s
pytestmypy (ubuntu-latest, 3.13, false)	9m 39s
pytestmypy (windows-latest, 3.12, false)	12m 25s
pytestmypy (ubuntu-latest, 3.12, true)	8m 8s
	46m 43s

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