Stricter match of BlockError in lookup sync #18820

Job	Run time
Check for 'skip-ci' label	1s
check-msrv	5m 5s
check-code	9m 30s
lockbud	13m 40s
target-branch-check	1s
beacon-chain-tests	31m 43s
release-tests-ubuntu	30m 42s
debug-tests-ubuntu	8m 54s
network-tests	24m 49s
op-pool-tests	22m 30s
release-tests-windows	31m 33s
slasher-tests	3m 41s
state-transition-vectors-ubuntu	9m 3s
basic-simulator-ubuntu	20m 52s
cargo-udeps	7m 5s
cli-check	15m 8s
compile-with-beta-compiler	13m 35s
ef-tests-ubuntu	6m 17s
execution-engine-integration-ubuntu	10m 8s
fallback-simulator-ubuntu	18m 31s
test-suite-success	5s
	4h 42m 53s

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