test(studio): the relay test waits for the resized rendition

quest/m0/README.md

@@ -100,7 +100,6 @@ repository.
 - [Web studio](/quest/m0/web.md) - the full studio in wasm on WebGPU and WebCodecs, served from this repository
 - [Virtual camera](/quest/m0/vcam/README.md) - the program or a published scene exposed as a system camera on Linux, Windows, and macOS
 - [Browser sources on the GPU under Mesa](/quest/m0/cef-headless.md) - shared-texture pages paint on Intel and AMD under Wayland, and a page that cannot paint fails loudly
-- [The program reaches a relay on every runner](/quest/m0/relay-test-flake.md) - the relay engine test stops failing the nightly on GitHub's runner
 - [Browser sources make no outside requests](/quest/m0/browser-offline.md) - no component updates, spellcheck downloads, or network time from the helper
 - [moq-studio builds on its own](/quest/m0/studio-builds-alone.md) - `cargo build -p moq-studio` no longer leans on a test dependency's features
 - [Unpublishing a scene ends its broadcast cleanly](/quest/m0/unpublish-clean.md) - viewers get a clean finish, not `Unroutable`, when a scene stops publishing

rs/moq-studio/src/engine.rs

@@ -4175,8 +4175,11 @@ mod tests {
 		let (resized, config) = kio::clock::timeout(TIMEOUT, async {
 			loop {
 				let catalog = catalogs.next().await.expect("catalog").expect("a catalog");
+				// The old sizes end one at a time, so a catalog between them can
+				// list the half size alone.
 				if let [(name, config)] = catalog.video.enabled().collect::<Vec<_>>().as_slice()
 					&& **name != video
+					&& *name != half
 				{
 					return ((*name).clone(), (*config).clone());
 				}