Removed `.isel` for `DatasetRolling.construct` consistent rolling behavior #9240

Job	Run time
detect ci trigger	3s
Doctests	55s
Minimum Version Policy (bare-minimum)	1m 2s
Mypy	2m 34s
Minimum Version Policy (min-all-deps)	55s
Mypy 3.9	2m 11s
	7m 40s

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