Switch runtimes benchmarking for delivering to sibling parachains instead of Parent #21755

Job	Run time
isdraft / isdraft	1s
check-dependency-rules	9s
check-fail-ci	11s
check-markdown	16s
check-readme	3m 29s
check-workspace	17s
preflight / preflight	49s
preflight / ci-versions	59s
check-toml-format	1m 4s
check-rust-feature-propagation	2m 10s
check-umbrella	2m 19s
fmt	1m 8s
test-rust-features	2m 11s
All quick checks passed	1s
	15m 4s

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