Is there a way to enable 'brush' button for example while on readyOnly?

[Reinoldo]

Hi people,

I know I can set the button active while on readonly, but while it seems to be active and working, suddently does not.

Can I manipulate this behavior through exec options for instance?
Something like:

 buttons: [
    {
      name: "brush",
      exec: (editor) => {
       //do something to enable brush on readyonly
        
      }
    }
  ],