[fenix] For https://github.com/mozilla-mobile/fenix/issues/7924 - Add strings for undo snackbar when removing a top site (https://github.com/mozilla-mobile/fenix/pull/8225)

app/src/main/res/values/strings.xml

@@ -720,8 +720,10 @@
     <string name="snackbar_private_tabs_closed">Private tabs closed</string>
     <!-- Text shown in snackbar when user deletes all private tabs -->
     <string name="snackbar_private_tabs_deleted">Private tabs deleted</string>
-    <!-- Text for action to undo deleting a tab or collection shown in snackbar -->
+    <!-- Text shown in snackbar to undo deleting a tab, top site or collection -->
     <string name="snackbar_deleted_undo">UNDO</string>
+    <!-- Text shown in snackbar when user removes a top site -->
+    <string name="snackbar_top_site_removed">Site removed</string>
     <!-- Text for action to undo deleting a tab or collection shown in a11y dialog -->
     <string name="a11y_dialog_deleted_undo">Undo</string>
     <!-- Text for action to confirm deleting a tab or collection shown in a11y dialog -->