Small clean-up for `EnsureForParachain` stuff #7233

Job	Run time
preflight / preflight	41s
preflight / preflight	41s
preflight / ci-versions	59s
preflight / ci-versions	59s
test-full-crypto-feature	2m 33s
test-full-crypto-feature	2m 33s
test-frame-ui	19m 30s
test-frame-ui	28m 33s
cargo-check-benches (master)	19m 33s
cargo-check-benches (master)	20m 49s
cargo-check-benches (current)	19m 33s
cargo-check-benches (current)	23m 1s
cargo-check-all-crate-macos	11m 13s
cargo-check-all-crate-macos	11m 13s
cargo-check-each-crate (1)	4m 32s
cargo-check-each-crate (1)	28m 34s
test-node-metrics	12m 28s
test-node-metrics	12m 28s
cargo-check-each-crate (2)	4m 33s
cargo-check-each-crate (2)	28m 34s
cargo-check-each-crate (3)	4m 32s
cargo-check-each-crate (3)	11m 31s
cargo-check-each-crate (4)	4m 28s
cargo-check-each-crate (4)	28m 34s
cargo-check-each-crate (5)	4m 32s
cargo-check-each-crate (5)	28m 33s
cargo-check-each-crate (6)	4m 26s
cargo-check-each-crate (6)	18m 0s
cargo-check-each-crate (7)	4m 34s
cargo-check-each-crate (7)	28m 35s
test-frame-examples-compile-to-wasm	3m 2s
test-frame-examples-compile-to-wasm	3m 2s
test-deterministic-wasm	7m 50s
test-deterministic-wasm	7m 50s
check-tracing	2m 18s
check-tracing	2m 18s
check-metadata-hash	4m 15s
check-metadata-hash	6m 56s
node-bench-regression-guard	1s
node-bench-regression-guard	13s
All test misc tests passed	1s
All test misc tests passed	1s
	7h 8m 32s

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