Moving the time interpolation down to within _Interpolator functions #678

Job	Run time
py3.13 \| macos \| integration tests	10m 59s
py3.13 \| macos \| unit tests	8m 31s
mypy	3m 25s
py3.13 \| ubuntu \| integration tests	12m 44s
py3.13 \| ubuntu \| unit tests	9m 44s
py3.13 \| windows \| integration tests	32m 19s
py3.13 \| windows \| unit tests	10m 54s
py3.10 \| ubuntu \| integration tests	12m 55s
py3.10 \| ubuntu \| unit tests	10m 17s
py3.11 \| ubuntu \| unit tests	9m 48s
py3.12 \| ubuntu \| unit tests	9m 27s
merge-test-artifacts	0s
	2h 11m 3s

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