Hide the async pipeline from the public API #1653

Job	Run time
cargo clippy (windows-latest)	31s
cargo check (msrv) (windows-latest)	1m 47s
cargo clippy (macos-latest)	31s
cargo check (msrv) (wasm32)	40s
cargo check (msrv) (macos-latest)	40s
cargo check (aarch64-android)	25s
cargo clippy (ubuntu-latest)	29s
cargo check (msrv) (ubuntu-latest)	49s
cargo clippy (wasm32)	28s
cargo doc	1m 1s
cargo fmt	22s
Prime LFS Cache	3s
cargo test (wasm32)	30s
typos	4s
cargo test (windows-latest)	1m 41s
cargo test (macos-latest)	1m 14s
cargo test (ubuntu-latest)	2m 30s
	13m 45s

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