feat(theming): Align theming closer to files app

Fix navigation view background

Follow-Up to #1680

Signed-off-by: Stefan Niedermann <info@niedermann.it>

Author: stefan-niedermann

app/src/main/res/layout/drawer_layout.xml

@@ -23,8 +23,7 @@
         <androidx.core.widget.NestedScrollView
             android:id="@+id/scrollView"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:background="?attr/colorPrimary">
+            android:layout_height="match_parent">
 
             <LinearLayout
                 android:layout_width="match_parent"