Implement weak subjectivity safety checks #24860

Job	Run time
Check for 'skip-ci' label	4s
check-msrv	5m 6s
target-branch-check	3s
lockbud	44s
check-code	5m 43s
op-pool-tests	11m 50s
network-tests	16m 32s
http-api-tests	21m 48s
release-tests-ubuntu	16m 36s
beacon-chain-tests	3m 28s
basic-simulator-ubuntu	20m 26s
compile-with-beta-compiler	13m 48s
cli-check	14m 2s
slasher-tests	3m 6s
debug-tests-ubuntu	5m 36s
state-transition-vectors-ubuntu	7m 3s
execution-engine-integration-ubuntu	8m 15s
ef-tests-ubuntu	8m 24s
cargo-udeps	7m 11s
fallback-simulator-ubuntu	1h 1m 23s
cargo-sort	8s
test-suite-success	0s
	3h 51m 16s

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