Switch useTextureView to default to true (#1286)

A number of people run into SurfaceView layering issues. It seems better to default to the more compatible option and let people reconfigure if they need the extra SurfaceView performance.

android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerViewManager.java

@@ -215,7 +215,7 @@ public class ReactExoplayerViewManager extends ViewGroupManager<ReactExoplayerVi
         videoView.setFullscreen(fullscreen);
     }
 
-    @ReactProp(name = PROP_USE_TEXTURE_VIEW, defaultBoolean = false)
+    @ReactProp(name = PROP_USE_TEXTURE_VIEW, defaultBoolean = true)
     public void setUseTextureView(final ReactExoplayerView videoView, final boolean useTextureView) {
         videoView.setUseTextureView(useTextureView);
     }