🐛 [#4012] Fix content component link popup in form builder

because the ckeditor element previously was not removed after closing the modal, this did not work

src/openforms/js/components/formio_builder/WebformBuilder.js

@@ -184,6 +184,13 @@ class WebformBuilder extends WebformBuilderFormio {
         // Clean up.
         this.removeEventListener(this.dialog, 'close', dialogClose);
         this.dialog = null;
+
+        // We have to reset the ckeditor BodyCollection to allow link popups to work
+        // after closing the editComponent modal, because it seems that `ClassicEditor.destroy` isn't being called
+        // https://ckeditor.com/docs/ckeditor5/latest/api/module_ui_editorui_bodycollection-BodyCollection.html
+        // See https://github.com/open-formulieren/open-forms/issues/4012
+        if (document.querySelector('.ck-body-wrapper'))
+          document.querySelector('.ck-body-wrapper').remove();
       };
       this.addEventListener(this.dialog, 'close', dialogClose);