Sidecar inclusion api updates #14566

Job	Run time
op-pool-tests	20m 7s
beacon-chain-tests	16m 42s
release-tests-ubuntu	18m 55s
network-tests	16m 56s
release-tests-windows	18m 41s
slasher-tests	5m 23s
target-branch-check	1s
debug-tests-ubuntu	7m 16s
dockerfile-ubuntu	15m 43s
doppelganger-protection-test	19m 12s
eth1-simulator-ubuntu	28m 0s
merge-transition-ubuntu	27m 35s
ef-tests-ubuntu	14m 31s
state-transition-vectors-ubuntu	10m 53s
no-eth1-simulator-ubuntu	27m 36s
syncing-simulator-ubuntu	21m 29s
cargo-udeps	5m 59s
check-code	6m 23s
check-msrv	8m 16s
compile-with-beta-compiler	7m 48s
execution-engine-integration-ubuntu	13m 36s
	5h 11m 2s

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