Moving the time interpolation down to within _Interpolator functions #747

Job	Run time
mypy	3m 36s
py3.13 \| macos \| integration tests	13m 40s
py3.13 \| macos \| unit tests	7m 59s
py3.13 \| ubuntu \| integration tests	14m 38s
py3.13 \| ubuntu \| unit tests	10m 1s
py3.13 \| windows \| integration tests	25m 21s
py3.13 \| windows \| unit tests	13m 10s
py3.10 \| ubuntu \| integration tests	14m 29s
py3.10 \| ubuntu \| unit tests	10m 55s
py3.11 \| ubuntu \| unit tests	10m 31s
py3.12 \| ubuntu \| unit tests	10m 31s
merge-test-artifacts	4s
	2h 14m 55s

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