Adding test for legacy checkpoint created with 2.3.3 #13567

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.1)	13m 20s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	14m 22s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	16m 15s
pl-cpu (macOS-14, lightning, 3.10, 2.2)	15m 2s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.2)	14m 39s
pl-cpu (windows-2022, lightning, 3.10, 2.2)	16m 26s
pl-cpu (macOS-14, lightning, 3.10, 2.3)	14m 32s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.3)	15m 18s
pl-cpu (windows-2022, lightning, 3.10, 2.3)	15m 45s
pl-cpu (macOS-12, pytorch, 3.11, 2.1)	22m 33s
pl-cpu (ubuntu-22.04, pytorch, 3.11, 2.1)	14m 41s
pl-cpu (windows-2022, pytorch, 3.11, 2.1)	15m 53s
pl-cpu (macOS-13, lightning, 3.8, 2.1, oldest)	20m 32s
pl-cpu (ubuntu-20.04, lightning, 3.8, 2.1, oldest)	12m 15s
pl-cpu (windows-2022, lightning, 3.8, 2.1, oldest)	15m 22s
pl-cpu (macOS-14, pytorch, 3.8, 2.1)	17m 3s
pl-cpu (ubuntu-20.04, pytorch, 3.8, 2.1)	14m 11s
pl-cpu (windows-2022, pytorch, 3.8, 2.1)	15m 30s
	4h 43m 39s

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