Show the window in front of the user when exitting immersive mode (#1342)

Author: MortimerGoro

app/src/common/shared/org/mozilla/vrbrowser/VRBrowserActivity.java

@@ -755,6 +755,9 @@ void resumeGeckoViewCompositor() {
             return;
         }
         mIsPresentingImmersive = false;
+        // Show the window in front of you when you exit immersive mode.
+        resetUIYaw();
+
         TelemetryWrapper.uploadImmersiveToHistogram();
         Handler handler = new Handler(Looper.getMainLooper());
         handler.postDelayed(() -> {