Mentions module, check for value

@RhiP thank you for your contribution.

Here is a bit different approach but it should solve the issue as well.
PR: https://github.com/goalgorilla/open_social/pull/3319

zanvidmar → credited nkoporec → .

zanvidmar → credited navneet0693 → .

After alignment we decided to go with approach that was already suggested by @RhiP.
Here is new PR: https://github.com/goalgorilla/open_social/pull/3322

PR https://github.com/goalgorilla/open_social/pull/3319 is for now deprecated.

Reviewed. The fix will land on 11.7.4.

Automatically closed - issue fixed for 2 weeks with no activity.