Fix heapq and _heapq stubs #15396

Job	Run time
stubtest: stdlib (ubuntu-latest, 3.12)	36s
stubtest: stdlib (ubuntu-latest, 3.10)	35s
stubtest: stdlib (ubuntu-latest, 3.15)	48s
stubtest: stdlib (ubuntu-latest, 3.13)	35s
stubtest: stdlib (ubuntu-latest, 3.14)	33s
stubtest: stdlib (windows-latest, 3.11)	1m 15s
stubtest: stdlib (ubuntu-latest, 3.11)	34s
stubtest: stdlib (windows-latest, 3.14)	1m 58s
stubtest: stdlib (macos-latest, 3.15)	1m 9s
stubtest: stdlib (macos-latest, 3.11)	34s
stubtest: stdlib (macos-latest, 3.12)	30s
stubtest: stdlib (macos-latest, 3.10)	1m 1s
stubtest: stdlib (windows-latest, 3.12)	1m 9s
stubtest: stdlib (windows-latest, 3.13)	1m 37s
stubtest: stdlib (macos-latest, 3.14)	59s
stubtest: stdlib (macos-latest, 3.13)	27s
stubtest: stdlib (windows-latest, 3.15)	1m 56s
	16m 16s

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