Moving the _search_time_index function to _index_search.py #748

Job	Run time
mypy	3m 26s
py3.13 \| macos \| unit tests	9m 27s
py3.13 \| macos \| integration tests	11m 54s
py3.13 \| ubuntu \| unit tests	10m 9s
py3.13 \| ubuntu \| integration tests	15m 0s
py3.13 \| windows \| unit tests	11m 46s
py3.13 \| windows \| integration tests	25m 31s
py3.10 \| ubuntu \| unit tests	11m 0s
py3.10 \| ubuntu \| integration tests	14m 41s
py3.11 \| ubuntu \| unit tests	10m 22s
py3.12 \| ubuntu \| unit tests	10m 20s
merge-test-artifacts	0s
	2h 13m 36s

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