chore: Add missing symbol (#2909) #4750

Job	Run time
check-docs	15s
check	42s
cargo-hack	3m 20s
cargo-public-api-crates (axum)	30s
cargo-deny check (advisories)	24s
cargo-public-api-crates (axum-core)	22s
dependencies-are-sorted	18s
cargo-deny check (bans licenses sources)	26s
Spell Check with Typos	5s
cargo-public-api-crates (axum-extra)	28s
cargo-public-api-crates (axum-macros)	19s
test-versions (stable)	1m 21s
test-docs	1m 40s
test-versions (beta)	1m 28s
armv5te-unknown-linux-musleabi	29s
test-msrv	2m 21s
wasm32-unknown-unknown	24s
test-nightly	1m 13s
	16m 5s

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