fix(ui): Fix exception on screen rotation if fullscreen is not suppor…

…ted (#4669)

If fullscreen is not supported when enableFullscreenOnRotation option is enabled, this exception occurred:

TypeError: i.j.requestFullscreen is not a function. (In 'i.j.requestFullscreen({navigationUI:"hide"})', 'i.j.requestFullscreen' is undefined)

This fixes the exception by checking isFullScreenSupported().

Backported to v3.2.x

Co-authored-by: Joey Parrish <joeyparrish@users.noreply.github.com>

ui/controls.js

@@ -970,7 +970,10 @@ shaka.ui.Controls = class extends shaka.util.FakeEventTarget {
     if (!this.video_ ||
         this.video_.readyState == 0 ||
         this.castProxy_.isCasting() ||
-        !this.config_.enableFullscreenOnRotation) { return; }
+        !this.config_.enableFullscreenOnRotation ||
+        !document.fullscreenEnabled) {
+      return;
+    }
 
     if (screen.orientation.type.includes('landscape') &&
         !document.fullscreenElement) {