[fenix] For https://github.com/mozilla-mobile/fenix/issues/20007: Multiselect title is important for a11y just in select mode. (https://github.com/mozilla-mobile/fenix/pull/20008)

app/src/main/java/org/mozilla/fenix/tabstray/browser/SelectionBannerBinding.kt

@@ -138,6 +138,8 @@ class SelectionBannerBinding(
         if (selectedMode) {
             containerView.multiselect_title.text =
                 context.getString(R.string.tab_tray_multi_select_title, tabCount)
+            containerView.multiselect_title.importantForAccessibility =
+                View.IMPORTANT_FOR_ACCESSIBILITY_YES
         }
     }
 }

app/src/main/res/layout/component_tabstray2.xml

@@ -62,6 +62,7 @@
         android:focusableInTouchMode="true"
         android:textColor="@color/contrast_text_normal_theme"
         android:textSize="20sp"
+        android:importantForAccessibility="no"
         app:fontFamily="@font/metropolis_semibold"
         app:layout_constraintBottom_toBottomOf="@id/topBar"
         app:layout_constraintEnd_toStartOf="@id/collect_multi_select"