PYTHON-5406 - AsyncPeriodicExecutor must reset CSOT contextvars befor… #2376

Job	Run time
Build wheels for manylinux_x86_64	2m 49s
Make SDist	31s
Build wheels for manylinux_aarch64	11m 29s
Build wheels for manylinux_ppc64le	10m 48s
Build wheels for manylinux_s390x	11m 29s
Build wheels for manylinux_i686	2m 43s
Build wheels for win_amd6	4m 59s
Build wheels for win32	5m 19s
Build wheels for macos	6m 2s
Download Wheels	7s
	56m 16s

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