Don't propagate attrs into child SubtitleOutput from SubtitleView

#minor-release

PiperOrigin-RevId: 382763308

RELEASENOTES.md

@@ -69,6 +69,9 @@
     *   Fix `StyledPlayerView` and `StyledPlayerControlView` popup menu items
         not expanding to occupy the full width of the popup
         ([#9086](https://github.com/google/ExoPlayer/issues/9086)).
+    *   Don't propagate `AttributeSet` from `SubtitleView` constructor into
+        `CanvasSubtitleOutput`. Just passing the `Context` is enough, and
+        ensures programmatic changes to the `SubtitleView` will propagate down.
 *   Video:
     *   Fix `IncorrectContextUseViolation` strict mode warning on Android 11
         ([#8246](https://github.com/google/ExoPlayer/pull/8246)).

library/ui/src/main/java/com/google/android/exoplayer2/ui/SubtitleView.java

@@ -140,7 +140,7 @@ public final class SubtitleView extends FrameLayout implements TextOutput {
     applyEmbeddedStyles = true;
     applyEmbeddedFontSizes = true;
 
-    CanvasSubtitleOutput canvasSubtitleOutput = new CanvasSubtitleOutput(context, attrs);
+    CanvasSubtitleOutput canvasSubtitleOutput = new CanvasSubtitleOutput(context);
     output = canvasSubtitleOutput;
     innerSubtitleView = canvasSubtitleOutput;
     addView(innerSubtitleView);