Moving the _search_time_index function to _index_search.py #754

Job	Run time
mypy	3m 50s
py3.13 \| macos \| integration tests	30m 27s
py3.13 \| macos \| unit tests	8m 26s
py3.13 \| ubuntu \| integration tests	13m 59s
py3.13 \| ubuntu \| unit tests	9m 59s
py3.13 \| windows \| unit tests	12m 4s
py3.10 \| ubuntu \| unit tests	10m 47s
py3.13 \| windows \| integration tests	25m 12s
py3.11 \| ubuntu \| unit tests	10m 28s
py3.12 \| ubuntu \| unit tests	10m 37s
py3.10 \| ubuntu \| integration tests	46m 37s
merge-test-artifacts	2s
	3h 2m 28s

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