[HOLD for payment 2024-06-28] [HOLD for payment 2024-06-24] [HOLD Mentions v2] Support mentions in editing comments

[puneetlath]

We want to update the edit comment flow to support editing/adding mentions. This does not mean adding support for the auto-complete component. Just parsing the mentions in both directions. This means that when someone goes to edit a comment with a user or report mention we should:

1. convert that from html to markdown so that it can be edited
2. perform the proper markdown to html conversion when the edited comment is saved so that if mentions have been added/removed we properly send that to the API

This is covered in the mentions v2 design doc here.

HOLD for #39549

Issue Owner

Current Issue Owner: @MitchExpensify

[melvin-bot]

Triggered auto assignment to @MitchExpensify (NewFeature), see https://stackoverflowteams.com/c/expensify/questions/14418#:~:text=BugZero%20process%20steps%20for%20feature%20requests for more details.

[melvin-bot]

⚠️ It looks like this issue is labelled as a New Feature but not tied to any GitHub Project. Keep in mind that all new features should be tied to GitHub Projects in order to properly track external CAP software time ⚠️

[MitchExpensify]

Held on #39549

[war-in]

Hi, I'm Marcin from Software Mansion and I would like to work on this :)

[puneetlath]

Sounds good. Just FYI, the back-end for this hasn't been done yet.