Fix android settings crash on API level 28 and lower

These API levels don't allow color selectors to be used as backgrounds.

Switch to MaterialDivider and set the color via dividerColor instead of background.

Source/Android/app/src/main/res/layout/activity_settings.xml

@@ -140,10 +140,11 @@
 
             </com.google.android.material.appbar.MaterialToolbar>
 
-            <View
+            <com.google.android.material.divider.MaterialDivider
                 android:layout_width="match_parent"
-                android:layout_height="1dp"
-                android:background="@color/settings_search_outline" />
+                android:layout_height="wrap_content"
+                app:dividerColor="@color/settings_search_outline"
+                app:dividerThickness="1dp" />
 
         </LinearLayout>