[FIX] board: Do not offer to create dashboard when there is no action

In case we have no defined action (e.g. redirection by python code), adding a dashboard should not be possible as the rendering based on the action.
This patch hides the 'Add to Dashboard' button in search view (opw 611288)

addons/board/static/src/js/dashboard.js

@@ -424,7 +424,7 @@ instance.web.SearchView.include({
     add_common_inputs: function() {
         this._super();
         var vm = this.getParent().getParent();
-        if (vm.inner_action && vm.inner_action.views) {
+        if (vm.inner_action && vm.inner_action.id && vm.inner_action.views) {
             (new instance.board.AddToDashboard(this));
         }
     }