Make iscoroutinefunction TypeIs #15551

Job	Run time
stubtest: stdlib (windows-latest, 3.13)	1m 13s
stubtest: stdlib (ubuntu-latest, 3.11)	42s
stubtest: stdlib (windows-latest, 3.11)	1m 19s
stubtest: stdlib (ubuntu-latest, 3.13)	37s
stubtest: stdlib (windows-latest, 3.14)	1m 22s
stubtest: stdlib (windows-latest, 3.15)	2m 1s
stubtest: stdlib (macos-latest, 3.11)	26s
stubtest: stdlib (ubuntu-latest, 3.15)	46s
stubtest: stdlib (windows-latest, 3.12)	1m 6s
stubtest: stdlib (ubuntu-latest, 3.10)	38s
stubtest: stdlib (ubuntu-latest, 3.12)	36s
stubtest: stdlib (macos-latest, 3.15)	46s
stubtest: stdlib (ubuntu-latest, 3.14)	35s
stubtest: stdlib (macos-latest, 3.14)	44s
stubtest: stdlib (macos-latest, 3.10)	51s
stubtest: stdlib (macos-latest, 3.13)	55s
stubtest: stdlib (macos-latest, 3.12)	31s
	15m 8s

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