`ProseMirror` editor loses focus when a dropdown menu item is clicked

[In3luki]

What happened?

This might be a side effect of #8212, I'm not sure if it was the same before that. Adding this.view.focus() at the end of ProseMirrorMenu#_onAction fixed it for me.

What ways of accessing Foundry can you encounter this issue in?

• [ ] Native App (Electron)
• [X] Chrome
• [X] Firefox
• [ ] Safari
• [ ] Other

Reproduction Steps

Click any dropdown item and observe the editor losing focus.

What core version are you reporting this for?

Version 12 Build 322

Relevant log output

No response

Bug Checklist

• [X] The issue occurs while all Modules are disabled

[aaclayton]

Probably related to the dropdown change. Tagging @Fyorl to take a look.