I want to either disable the "Headline" grid editor that's built in, or preferably to override it with a plugin. I've tried using the same name and alias in the package.manifest file of my plugin, but it doesn't seem to override the built-in editor. If I can't override, how can I disable it completely? I want to be able to do this without removing it from the grid.editors.config.js file. Is there a setting somewhere I can change, or a file I can add to my project to disable or override it? I want to do it without changing the base install because when I upgrade I don't want my changes overridden.