Rust

Change `Harness::run` to run until no more repaints are requested #13980

Job	Run time
android	28s
Check wasm32 + wasm-bindgen	2m 19s
cargo-deny aarch64-apple-darwin	43s
Check wasm32+atomics	1m 46s
cargo-deny aarch64-linux-android	38s
Format + check + test	2m 25s
cargo-deny i686-pc-windows-gnu	41s
ios	21s
Run tests	2m 17s
cargo-deny i686-pc-windows-msvc	37s
cargo-deny i686-unknown-linux-gnu	42s
Check Windows	1m 42s
cargo-deny wasm32-unknown-unknown	39s
cargo-deny x86_64-apple-darwin	37s
cargo-deny x86_64-pc-windows-gnu	38s
cargo-deny x86_64-pc-windows-msvc	37s
cargo-deny x86_64-unknown-linux-gnu	38s
cargo-deny x86_64-unknown-linux-musl	39s
cargo-deny x86_64-unknown-redox	36s
	19m 3s

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