Android TV: Fix crash when long pressing a game

Also fixes the same crash when accessing the game details
(which only can be accessed after long pressing a game).
The problem was that we were not using a theme that had
an AppCompat theme as a parent.

Unfortunately, the game details dialog uses white on white on
Android TV, and I don't know how to fix this in a clean way.

Source/Android/app/src/main/res/values/styles.xml

@@ -27,7 +27,7 @@
 
     <!-- Themes for Dialogs -->
 
-    <!-- Inherit from the Base Dolphin Dialog Theme -->
+    <style name="DolphinDialogBase" parent="Theme.AppCompat.DayNight.Dialog.Alert" />
 
     <style name="DolphinEmulationBase" parent="Theme.AppCompat.DayNight.DarkActionBar">
         <item name="colorPrimary">@color/dolphin_blue</item>