cumulus: `ParachainBlockData` support multiple blocks #6066

Job	Run time
preflight / preflight	43s
preflight / ci-versions	1m 6s
test-frame-ui	46m 28s
test-full-crypto-feature	2m 36s
cargo-check-benches (master)	6m 12s
cargo-check-benches (current)	6m 1s
cargo-check-each-crate (1)	28m 36s
test-node-metrics	12m 23s
cargo-check-each-crate (2)	24m 20s
cargo-check-each-crate (3)	8m 49s
cargo-check-all-crate-macos	12m 23s
cargo-check-each-crate (4)	26m 36s
cargo-check-each-crate (5)	35m 48s
cargo-check-each-crate (6)	15m 43s
cargo-check-each-crate (7)	32m 15s
test-frame-examples-compile-to-wasm	3m 4s
test-deterministic-wasm	7m 53s
node-bench-regression-guard	9s
check-tracing	2m 47s
check-metadata-hash	7m 2s
All test misc tests passed	1s
	4h 40m 55s

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