Electra attestation changes rm decode impl #16886

Job	Run time
check-code	8m 22s
target-branch-check	1s
Check for 'skip-ci' label	1s
check-msrv	4m 1s
cargo-udeps	4m 9s
cli-check	15m 38s
basic-simulator-ubuntu	19m 4s
beacon-chain-tests	1m 58s
compile-with-beta-compiler	13m 53s
debug-tests-ubuntu	9m 23s
dockerfile-ubuntu	14m 15s
doppelganger-protection-test	20m 16s
ef-tests-ubuntu	14m 31s
execution-engine-integration-ubuntu	15m 6s
fallback-simulator-ubuntu	17m 56s
network-tests	4m 9s
op-pool-tests	19m 4s
release-tests-ubuntu	19m 27s
release-tests-windows	22m 25s
slasher-tests	2m 22s
state-transition-vectors-ubuntu	9m 20s
test-suite-success	0s
	3h 55m 21s

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