PYTHON-4677 Specify how maxTimeMS can be set for explain helpers #7817

Job	Run time
static	3m 47s
DocTest	52s
Docs Checks	47s
Typing Tests (3.9)	1m 6s
CPython 3.9-ubuntu-latest	9m 5s
CPython 3.13-ubuntu-latest	8m 50s
Typing Tests (3.11)	1m 8s
CPython pypy-3.10-ubuntu-latest	10m 25s
CPython 3.13t-ubuntu-latest	9m 6s
Test using minimum dependencies and supported Python	32s
Make an sdist	13s
Link Check	5m 52s
Test async's minimum dependencies and Python	44s
Install from SDist and Test	39s
	53m 6s

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