Make max_blobs_per_block a config parameter #19650

Job	Run time
target-branch-check	1s
check-msrv	5m 26s
check-code	14m 4s
lockbud	14m 54s
Check for 'skip-ci' label	1s
op-pool-tests	18m 9s
release-tests-windows	34m 11s
release-tests-ubuntu	26m 36s
beacon-chain-tests	33m 44s
ef-tests-ubuntu	15m 36s
debug-tests-ubuntu	14m 14s
basic-simulator-ubuntu	13m 57s
fallback-simulator-ubuntu	11m 36s
network-tests	21m 15s
slasher-tests	1m 41s
state-transition-vectors-ubuntu	2m 27s
cargo-sort	29s
cargo-udeps	7m 28s
cli-check	6m 56s
execution-engine-integration-ubuntu	15m 6s
compile-with-beta-compiler	14m 42s
test-suite-success	6s
	4h 32m 39s

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