[Android] Fix for the bottom padding of the main menu (#31315)

android/java/apk_for_test.flags

@@ -110,6 +110,7 @@
     public <init>(...);
     *** getPopupPosition(...);
     *** runMenuItemEnterAnimations(...);
+    *** createAppMenuContentView(...);
 }
 
 -keep class org.chromium.chrome.browser.ui.appmenu.BraveAppMenu {

android/java/res/layout/icon_row_menu_footer.xml

@@ -9,6 +9,7 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
+    android:paddingBottom="@dimen/app_menu_padding"
     android:background="@color/menu_action_bar_bg_color_baseline" >
 
     <View style="@style/HorizontalDivider" />