Live player fixes and improvements (#11855)

* Only set stalled error when player is visible

* Show activity indicator before live player starts playing

* remove comment

* keep gradients when still image is showing

* fix chips

* red dot and outline

web/src/components/player/MsePlayer.tsx

@@ -328,7 +328,9 @@ function MSEPlayer({
 
           setBufferTimeout(
             setTimeout(() => {
-              onError("stalled");
+              if (document.visibilityState === "visible") {
+                onError("stalled");
+              }
             }, 3000),
           );
         }