Merge pull request #7308 from kjac/v8/fix/nested-content-itempicker-double-enter

V8: Prevent the Nested Content item picker from crashing

src/Umbraco.Web.UI.Client/src/views/propertyeditors/nestedcontent/nestedcontent.controller.js

@@ -134,7 +134,7 @@
         };
 
         vm.openNodeTypePicker = function ($event) {
-            if (vm.nodes.length >= vm.maxItems) {
+            if (vm.overlayMenu || vm.nodes.length >= vm.maxItems) {
                 return;
             }