Resolve #2999328 "Support multiple fields 2.x"

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Closes #2999328

config/install/ace_editor.settings.yml

@@ -178,6 +178,9 @@ syntax_list:
   yaml: "YAML"
 theme: 'cobalt'
 syntax: 'html'
+syntax_field: '_none'
+modelist: false
+inline: false
 height: '300px'
 width: '100%'
 font_size: '12pt'