Apply button pressed conditional styles to non-default actions

I believe this is currently not possible when creating custom actions. Will this be added for v2? Or is it possible to do now? Mainly I want to be able to do it for sub/super script.

Start from the custom-action configuration and the subscript/superscript use case described in the issue. No file or test is named; trace where action styles are defined, then verify whether non-default actions can receive pressed-state styles and confirm the resulting editor behavior.

Written by the indexing model from the issue text.