Support cloning operand-less dispatches #34889

Job	Run time
setup / setup	9s
runtime_small	2m 29s
runtime :: ubuntu-24.04	1m 9s
runtime_tracing :: ubuntu-24.04 :: tracy	58s
runtime :: windows-2022	2m 52s
runtime_tracing :: ubuntu-24.04 :: console	1m 12s
runtime :: macos-14	1m 9s
runtime_tracing :: windows-2022 :: tracy	2m 7s
runtime_tracing :: windows-2022 :: console	2m 3s
runtime_tracing :: macos-14 :: tracy	1m 0s
runtime_tracing :: macos-14 :: console	53s
linux_x64_bazel / linux_x64_bazel	15m 39s
linux_x64_clang / linux_x64_clang	15m 40s
linux_x64_clang_asan / linux_x64_clang_asan	15m 15s
ci_summary / summary	1s
	1h 2m 36s

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