Fix parameter count in ModelSummary when parameters are DTensors #13788

Job	Run time
pl-cpu (macOS-14, lightning, 3.10, 2.1)	13m 23s
pl-cpu (ubuntu-20.04, lightning, 3.10, 2.1)	13m 48s
pl-cpu (windows-2022, lightning, 3.10, 2.1)	16m 12s
pl-cpu (macOS-14, lightning, 3.11, 2.2)	13m 58s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.2)	14m 8s
pl-cpu (windows-2022, lightning, 3.11, 2.2)	16m 54s
pl-cpu (macOS-14, lightning, 3.11, 2.3)	14m 41s
pl-cpu (ubuntu-20.04, lightning, 3.11, 2.3)	13m 43s
pl-cpu (windows-2022, lightning, 3.11, 2.3)	17m 23s
pl-cpu (macOS-14, lightning, 3.12, 2.4)	14m 50s
pl-cpu (ubuntu-20.04, lightning, 3.12, 2.4)	19m 38s
pl-cpu (windows-2022, lightning, 3.12, 2.4)	18m 7s
pl-cpu (macOS-12, pytorch, 3.10, 2.1)	21m 25s
pl-cpu (ubuntu-22.04, pytorch, 3.10, 2.1)	13m 20s
pl-cpu (windows-2022, pytorch, 3.10, 2.1)	15m 4s
pl-cpu (macOS-13, lightning, 3.9, 2.1, oldest)	20m 12s
pl-cpu (ubuntu-20.04, lightning, 3.9, 2.1, oldest)	12m 18s
pl-cpu (windows-2022, lightning, 3.9, 2.1, oldest)	15m 13s
pl-cpu (macOS-14, pytorch, 3.9, 2.1)	13m 55s
pl-cpu (ubuntu-20.04, pytorch, 3.9, 2.1)	14m 24s
pl-cpu (windows-2022, pytorch, 3.9, 2.1)	15m 4s
	5h 27m 40s

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