monaco_editor: support Zope4 ZMI by hiding ace editor

bt5/erp5_monaco_editor/SkinTemplateItem/portal_skins/erp5_monaco_editor/monaco_editor_support.zpt

@@ -38,7 +38,16 @@
     }
   </style>
 </tal:block>
-
+<style tal:condition="not: options/field_id | nothing">
+  /* Adjust ZMI style for Zope 4's ace editor */
+  #editor_container:after {
+    /* This says "press F10 for full screen but our monaco patch does not support this" */
+    content: "" !important;
+  }
+  .ace_editor {
+    display: none;
+  }
+</style>
 <div id="monaco-container" style="width:100%;height:800px;border:1px solid grey;"></div>
 
 <script tal:content='python: "var portal_url=" + modules["json"].dumps(options.get("portal_url"))'></script>