Add missed layout_below property for priority section.

Fix: 170257825
Test: manual
Change-Id: I09d9fcd2ad8235bc93f4af04bb7b15233d9c32c9
diff --git a/res/layout/notif_priority_conversation_preference.xml b/res/layout/notif_priority_conversation_preference.xml
index d07bc23..c93abf2 100644
--- a/res/layout/notif_priority_conversation_preference.xml
+++ b/res/layout/notif_priority_conversation_preference.xml
@@ -67,6 +67,7 @@
             android:focusable="false"
             android:ellipsize="end"
             android:maxLines="4"
+            android:layout_below="@id/icon_label_container"
             android:textAppearance="@style/TextAppearance.NotificationImportanceDetail"
             android:visibility="gone" />
     </com.android.settings.notification.NotificationButtonRelativeLayout>