Fix missing navigation bar padding in page view

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

@@ -96,7 +96,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:gravity="center_vertical"
-        app:layout_constraintBottom_toBottomOf="parent">
+        app:layout_constraintBottom_toTopOf="@id/vw_navigation_bar">
 
         <io.legado.app.ui.widget.BatteryView
             android:id="@+id/tv_footer_left"
@@ -139,4 +139,10 @@
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
+    <FrameLayout
+        android:id="@+id/vw_navigation_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>