Make iscoroutinefunction TypeIs #15550

Job	Run time
stubtest: stdlib (ubuntu-latest, 3.13)	37s
stubtest: stdlib (ubuntu-latest, 3.12)	36s
stubtest: stdlib (windows-latest, 3.11)	1m 10s
stubtest: stdlib (windows-latest, 3.15)	1m 48s
stubtest: stdlib (ubuntu-latest, 3.14)	32s
stubtest: stdlib (ubuntu-latest, 3.10)	44s
stubtest: stdlib (macos-latest, 3.10)	1m 9s
stubtest: stdlib (macos-latest, 3.15)	47s
stubtest: stdlib (macos-latest, 3.12)	42s
stubtest: stdlib (macos-latest, 3.13)	42s
stubtest: stdlib (ubuntu-latest, 3.11)	35s
stubtest: stdlib (windows-latest, 3.12)	1m 24s
stubtest: stdlib (windows-latest, 3.13)	1m 1s
stubtest: stdlib (macos-latest, 3.14)	56s
stubtest: stdlib (ubuntu-latest, 3.15)	43s
stubtest: stdlib (windows-latest, 3.14)	1m 19s
stubtest: stdlib (macos-latest, 3.11)	47s
	15m 32s

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