Fix solid background behind text selection UI in dialogs

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

@@ -18,7 +18,6 @@
     <!--AlertDialog-->
     <!--===========-->
     <style name="ThemeOverlay.Tachiyomi.MaterialAlertDialog" parent="ThemeOverlay.Material3.MaterialAlertDialog">
-        <item name="android:background">?attr/colorSurface</item>
         <item name="android:textColorPrimary">?attr/colorOnSurface</item>
         <item name="android:textColor">?attr/colorOnSurface</item>
     </style>

app/src/main/res/values/themes.xml

@@ -56,7 +56,6 @@
         <item name="android:enforceNavigationBarContrast" tools:targetApi="Q">false</item>
         <item name="android:enforceStatusBarContrast" tools:targetApi="Q">false</item>
         <item name="android:itemTextAppearance">@style/TextAppearance.Widget.Menu</item>
-        <item name="android:alertDialogTheme">@style/ThemeOverlay.Tachiyomi.MaterialAlertDialog</item>
         <item name="materialAlertDialogTheme">@style/ThemeOverlay.Tachiyomi.MaterialAlertDialog</item>
         <item name="textAppearanceButton">@style/TextAppearance.Widget.Button</item>
         <item name="android:buttonStyle">?attr/borderlessButtonStyle</item>