PYTHON-4780 Implement fast path for server selection with Primary #7751

Job	Run time
static	3m 7s
CPython 3.9-ubuntu-latest	8m 58s
CPython pypy-3.10-ubuntu-latest	10m 16s
CPython 3.13-ubuntu-latest	9m 0s
CPython 3.13t-ubuntu-latest	9m 14s
DocTest	1m 3s
Docs Checks	52s
Link Check	4m 34s
Make an sdist	11s
Typing Tests (3.11)	1m 15s
Typing Tests (3.9)	1m 12s
Test using minimum dependencies and supported Python	30s
Test async's minimum dependencies and Python	35s
Install from SDist and Test	38s
	51m 25s

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