change(rpc): Avoid re-verifying transactions in blocks if those transactions are in the mempool #2065

Job	Run time
Check deny.toml bans	31s
Check Cargo.lock is up to date	8m 33s
Check deny.toml bans --features default-release-binaries	31s
Check deny.toml bans --all-features	30s
Install zebrad from lockfile without cache on ubuntu-latest	8m 41s
Test stable on ubuntu-latest	8m 47s
Test beta on ubuntu-latest	8m 47s
Test stable on macos-latest	8m 50s
Check for unused dependencies	16s
Check deny.toml sources	33s
Test stable on windows-latest	8m 34s
Check deny.toml sources --features default-release-binaries	31s
Test beta on windows-latest	8m 33s
Check deny.toml sources --all-features	32s
Open or update issues for OS integration failures	1s
	1h 4m 10s

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