SettingsTheme: Correctly theming AlertDialog with M3 colors

Change-Id: I25755bded0e38fb5f43f49e70126ee5d73a2856d
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

Author: someone5678

packages/SettingsLib/SettingsTheme/res/values/themes.xml

@@ -32,11 +32,9 @@
     </style>
 
     <style name="Theme.AlertDialog.SettingsLib" parent="@style/Theme.AppCompat.DayNight.Dialog.Alert">
-        <!-- TODO(b/189308264): fix the crash in Android R if set the attributes:
-             <item name="colorAccent">@*android:color/accent_device_default_light</item>
-             <item name="android:colorBackground">@color/settingslib_dialog_background</item>
-             <item name="dialogCornerRadius">@dimen/settingslib_dialogCornerRadius</item>
-        -->
+        <item name="colorAccent">@color/settingslib_materialColorPrimary</item>
+        <item name="android:colorBackground">@color/settingslib_materialColorSurfaceContainerHigh</item>
+
         <item name="android:windowSoftInputMode">adjustResize</item>
         <item name="android:clipToPadding">true</item>
         <item name="android:clipChildren">true</item>