Stepwise LR scheduler #14672

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.1)	14s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	22s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	19s
pl-cpu (macOS-14, lightning, 3.11, 2.2.2)	18s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.2.2)	16s
pl-cpu (windows-2022, lightning, 3.11, 2.2.2)	19s
pl-cpu (macOS-14, lightning, 3.11, 2.3)	21s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	14s
pl-cpu (windows-2022, lightning, 3.11, 2.3)	20s
pl-cpu (macOS-14, lightning, 3.12.7, 2.4.1)	14s
pl-cpu (ubuntu-22.04, lightning, 3.12.7, 2.4.1)	15s
pl-cpu (windows-2022, lightning, 3.12.7, 2.4.1)	12s
pl-cpu (macOS-14, lightning, 3.12.7, 2.5.1)	15s
pl-cpu (ubuntu-22.04, lightning, 3.12.7, 2.5.1)	12s
pl-cpu (windows-2022, lightning, 3.12.7, 2.5.1)	11s
pl-cpu (macOS-14, pytorch, 3.12.7, 2.5.1)	13s
pl-cpu (ubuntu-22.04, pytorch, 3.12.7, 2.5.1)	14s
pl-cpu (windows-2022, pytorch, 3.12.7, 2.5.1)	11s
pl-cpu (macOS-14, lightning, 3.9, 2.1, oldest)	13s
pl-cpu (ubuntu-20.04, lightning, 3.9, 2.1, oldest)	24s
pl-cpu (windows-2022, lightning, 3.9, 2.1, oldest)	18s
pl-cpu (macOS-14, pytorch, 3.9, 2.1)	13s
pl-cpu (ubuntu-20.04, pytorch, 3.9, 2.1)	16s
pl-cpu (windows-2022, pytorch, 3.9, 2.1)	10s
	6m 14s

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