PYTHON-5780 Increase code coverage for pyopenssl_context.py #3793

Job	Run time
Make SDist	54s
Build wheels for win32	4m 36s
Build wheels for manylinux_aarch64	13m 43s
Build wheels for manylinux_x86_64	2m 20s
Build wheels for manylinux_i686	2m 17s
Build wheels for win_amd6	3m 42s
Build wheels for manylinux_ppc64le	13m 44s
Build wheels for macos	3m 19s
Build wheels for manylinux_s390x	15m 0s
Build wheels for win_arm64	6m 22s
Download Wheels	11s
	1h 6m 8s

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