Document iteration order of some passes #2615

Job	Run time
cargo check (aarch64-android)	26s
cargo check (msrv) (wasm32)	16s
cargo check (msrv) (windows-latest)	1m 19s
cargo clippy (windows-latest)	5m 33s
cargo check (msrv) (macos-latest)	47s
cargo clippy (wasm32)	1m 55s
cargo clippy (macos-latest)	2m 39s
cargo doc	1m 44s
cargo check (msrv) (ubuntu-latest)	59s
cargo clippy (ubuntu-latest)	3m 13s
formatting	41s
Prime LFS Cache	4s
cargo test (wasm32)	23s
typos	3s
cargo test (windows-latest)	3m 35s
cargo test (macos-latest)	2m 14s
cargo test (ubuntu-latest)	3m 49s
	29m 40s

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