erp5_core: fixup editor: disable maximize on html_viewer

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/gadget_editor.js.js

@@ -70,6 +70,7 @@
           ((state_dict.editor === 'fck_editor') ||
            (state_dict.content_type === 'text/html'))) {
         state_dict.editor = 'html_viewer';
+        state_dict.maximize = undefined;
       }
       return this.changeState(state_dict);
     })