Correct hovering highlights on HiDPI screens + correct 2 flakey tests (#5510)

* Fix hover highlights on HiDPI screens

* Fix flakey tests with new toolbar.exitSketch

* tsc && lint && fmt

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* Disable pw electron thing again

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

* A snapshot a day keeps the bugs away! 📷🐛 (OS: namespace-profile-ubuntu-8-cores)

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

src/lib/selections.ts

@@ -646,16 +646,17 @@ export function codeToIdSelections(
 }
 
 export async function sendSelectEventToEngine(
-  e: MouseEvent | React.MouseEvent<HTMLDivElement, MouseEvent>,
-  el: HTMLVideoElement
+  e: React.MouseEvent<HTMLDivElement, MouseEvent>
 ) {
-  const { x, y } = getNormalisedCoordinates({
-    clientX: e.clientX,
-    clientY: e.clientY,
-    el,
-    streamWidth: engineCommandManager.width,
-    streamHeight: engineCommandManager.height,
-  })
+  // No video stream to normalise against, return immediately
+  if (!engineCommandManager.elVideo)
+    return Promise.reject('video element not ready')
+
+  const { x, y } = getNormalisedCoordinates(
+    e,
+    engineCommandManager.elVideo,
+    engineCommandManager.streamDimensions
+  )
   const res = await engineCommandManager.sendSceneCommand({
     type: 'modeling_cmd_req',
     cmd: {