[LinalgExt] Fusion support for LinalgExt ScatterOp 1/3 #33162

Job	Run time
setup / setup	6s
runtime_small	2m 25s
runtime :: ubuntu-24.04	1m 17s
runtime :: windows-2022	3m 19s
runtime :: macos-14	1m 17s
runtime_tracing :: tracy provider	1m 28s
runtime_tracing :: console provider	1m 14s
linux_x64_bazel / linux_x64_bazel	30m 2s
linux_x64_clang / linux_x64_clang	21m 13s
linux_x64_clang_asan / linux_x64_clang_asan	21m 40s
ci_summary / summary	3s
	1h 24m 4s

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