PYTHON-5496 Update CSOT tests for change in dropIndex behavior in 8.3… #8052

Job	Run time
DocTest	1m 16s
CPython 3.9-ubuntu-latest	11m 36s
CPython pypy-3.10-ubuntu-latest	12m 38s
static	4m 18s
CPython 3.13t-ubuntu-latest	11m 46s
Docs Checks	43s
Typing Tests (3.9)	1m 10s
Typing Tests (3.11)	1m 10s
Make an sdist	18s
Test using minimum dependencies and supported Python	41s
Test async's minimum dependencies and Python	52s
Link Check	2m 37s
Install from SDist and Test	59s
	50m 4s

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