Embedded plugin not visible in TextPlugin TipTap editor

[mrbazzan]

A "text enabled" plugin does not show inside TextPlugin editor.
The plugin shows on the structure board but there is no way to
click on it from the tip-tap editor

STEPS TO REPRODUCE

• set the text_enabled attribute to True on the CMSPluginBase instance
• Create an instance of TextPlugin
• Click on the CMS Plugin dropdown inside the tip-tap editor
• Add the "text-enabled" plugin and save.
• On edit, it shows in the structure board, but there is no way to access it from
  the tip-tap editor