axum-extra/scheme: Use rejection macros for `SchemeMissing` rejection #5179

Job	Run time
check	49s
check-docs	14s
cargo-hack	3m 42s
cargo-public-api-crates (axum)	29s
cargo-public-api-crates (axum-core)	13s
cargo-deny check (advisories)	30s
dependencies-are-sorted	13s
cargo-deny check (bans licenses sources)	23s
Spell Check with Typos	3s
cargo-public-api-crates (axum-extra)	25s
cargo-public-api-crates (axum-macros)	15s
test-nightly	1m 20s
test-msrv	1m 52s
test-docs	1m 13s
test-versions (stable)	1m 33s
test-versions (beta)	1m 30s
armv5te-unknown-linux-musleabi	23s
wasm32-unknown-unknown	15s
	15m 22s

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