Multiple bugs due to outdated react-mentions being used in Sentry comments box

[GaurangTandon]

Environment

SaaS (https://sentry.io/)

Steps to Reproduce

1. Visit any issue activity page: https://<X>.sentry.io/issues/<ID>/activity
2. Click into comments textbox and typed "abcd"
3. Click outside the textbox into a blank area
4. Press Cmd+Z

This is a known issue in react-mentions, see signavio/react-mentions@4ef52dd and it got fixed in version 4.4.10, released in June 2023 (https://www.npmjs.com/package/react-mentions?activeTab=versions).

Since the version 4.4.2 (which is the version sentry currently uses:

sentry/package.json

Line 154 in 833609d

"react-mentions": "4.4.2",

), react-mentions has fixed several issues like the one above (see changelog: https://github.com/signavio/react-mentions/blob/master/CHANGELOG.md). It would be nice if we could upgrade this dependency to the latest

Expected Result

The latest change is undone, the textbox becomes empty or its value becomes "abc".

Actual Result

Value becomes "abcabcd".

Product Area

Issues

Link

No response

DSN

No response

Version

No response

[getsantry]

Assigning to @getsentry/support for routing ⏲️

[getsantry]

Routing to @getsentry/product-owners-issues for triage ⏲️