erp5_officejs: schema_editor: does not show schema in panel if schema does not have title

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_erp5_ojs_schema_panel.js.js

@@ -74,7 +74,7 @@
         .push(function () {
           return RSVP.all([
             context.jio_allDocs({
-              "query": 'portal_type:"JSON Schema"',
+              "query": '(portal_type:"JSON Schema") AND (NOT (title:""))',
               "limit": [0, 31],
               "select_list": ["title", "reference"],
               "sort_on": [["title", "descending"]]