Hoist collapse shape out of scf.forall when possible and expand its destination #31717

Job	Run time
setup / setup	9s
runtime_small	2m 1s
runtime :: ubuntu-20.04	1m 17s
runtime :: windows-2022	3m 8s
runtime_tracing :: tracy provider	54s
runtime :: macos-14	1m 20s
runtime_tracing :: console provider	52s
summary	4s
	9m 45s

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