[fenix] For https://github.com/mozilla-mobile/fenix/issues/9550 - Don't overlap search with shortcuts text

Private mode search with suggestion onboarding was overlapping "This time, search with: " text. Adjust constraints to allow it to show under onboarding when present.

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

@@ -12,7 +12,7 @@
     android:fadingEdgeLength="40dp"
     android:nestedScrollingEnabled="false"
     android:requiresFadingEdge="vertical"
-    app:layout_constraintTop_toTopOf="@id/awesomeBar_barrier"
+    app:layout_constraintTop_toBottomOf="@id/search_with_shortcuts"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintStart_toStartOf="parent"
     mozac:awesomeBarDescriptionTextColor="?secondaryText"

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

@@ -137,7 +137,7 @@
                 android:visibility="gone"
                 android:text="@string/search_shortcuts_search_with_2"
                 app:layout_constraintStart_toStartOf="@id/scrollable_area"
-                app:layout_constraintTop_toBottomOf="@id/divider_line"
+                app:layout_constraintTop_toBottomOf="@id/awesomeBar_barrier"
                 tools:text="This time, search with:" />
 
             <androidx.constraintlayout.widget.Barrier