chore(proto): move optimistic block protos to v1 #6846

Job	Run time
run_checker / changes	4s
compiles	1m 44s
lockfile	19s
protos-compiled	32s
solidity-contracts-compiled	1m 29s
rust	3m 11s
audit	0s
clippy	1m 20s
custom-lints	3m 34s
doctest	2m 17s
rust-ethereum	1m 7s
test / success	1s
	15m 38s

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