Add SyncV2 Causal Negotiation #10163

Job	Run time
ormolu	13s
build ucm (ubuntu-20.04)	7m 8s
build ucm (macOS-13)	29m 40s
build ucm (windows-2019)	11m 49s
generate jit source	5s
run transcripts (ubuntu-20.04)	3m 58s
run interpreter tests (ubuntu-20.04)	52s
run transcripts (macos-13)	7m 24s
run interpreter tests (macos-13)	1m 51s
run transcripts (windows-2019)	7m 7s
build jit binary / build jit binary (ubuntu-20.04)	7s
build jit binary / build jit binary (macOS-13)	22s
build jit binary / build jit binary (windows-2019)	22s
test jit / test jit (ubuntu-20.04)	8s
test jit / test jit (macOS-13)	16s
	1h 11m 22s

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