Add @use_datetimepicker decorator to use Tempus Dominus on Bootstrap 5 pages #10790

Job	Run time
tests (python, 05)	15m 43s
tests (python, 05)	15m 43s
tests (python, 6a)	12m 57s
tests (python, 6a)	12m 57s
tests (python, bf)	14m 37s
tests (python, bf)	14m 37s
tests (python-sharded-and-javascript)	10m 4s
tests (python-sharded-and-javascript)	14m 54s
	1h 51m 32s

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