Fall back to default title when queries are deselected

app/assets/javascripts/angular/work_packages/controllers/work-packages-list-controller.js

@@ -188,8 +188,10 @@ angular.module('openproject.workPackages.controllers')
 
   // Note: I know we don't want watchers on the controller but I want all the toolbar directives to have restricted scopes. Thoughts welcome.
   $scope.$watch('query.name', function(newValue, oldValue){
-    if(newValue != oldValue && $scope.query.hasName()){
+    if(newValue !== oldValue && $scope.query.hasName()){
       $scope.selectedTitle = newValue;
+    } else {
+      $scope.selectedTitle = I18n.t('js.toolbar.unselected_title');
     }
   });