Fix the top ui transparent background fix for private mode too (#2146)

Author: keianhzo

app/src/main/res/drawable/fullscreen_button_private.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android"
+<animated-selector xmlns:android="http://schemas.android.com/apk/res/android"
     android:enterFadeDuration="@integer/ui_fadeAnimTime"
     android:exitFadeDuration="@integer/ui_fadeAnimTime">
     <item android:state_enabled="false">
@@ -22,4 +22,4 @@
             <solid android:color="@color/eggplant" />
         </shape>
     </item>
-</selector>
+</animated-selector>

app/src/main/res/drawable/fullscreen_button_private_first.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android"
+<animated-selector xmlns:android="http://schemas.android.com/apk/res/android"
     android:enterFadeDuration="@integer/ui_fadeAnimTime"
     android:exitFadeDuration="@integer/ui_fadeAnimTime">
     <item android:state_enabled="false">
@@ -42,4 +42,4 @@
                 android:bottomLeftRadius="20dp"/>
         </shape>
     </item>
-</selector>
+</animated-selector>

app/src/main/res/drawable/fullscreen_button_private_last.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<selector xmlns:android="http://schemas.android.com/apk/res/android"
+<animated-selector xmlns:android="http://schemas.android.com/apk/res/android"
     android:enterFadeDuration="@integer/ui_fadeAnimTime"
     android:exitFadeDuration="@integer/ui_fadeAnimTime">
     <item android:state_enabled="false">
@@ -30,4 +30,4 @@
             <corners android:bottomRightRadius="20dp" android:topRightRadius="20dp" />
         </shape>
     </item>
-</selector>
+</animated-selector>