Fix showing deleted comments

[micahmo]

Pull Request Description

This PR fixes an issue where the contents of deleted comments can appear in some places (i.e., user profile). The cleaning code has been applied directly to the CommentContent widget so it automatically gets applied everywhere (rather than having to remember to do it in every different type of bloc).

While doing some refactoring, I came across this widget which does not appear to be used anywhere. Is it safe to deleted?

https://github.com/thunder-app/thunder/blob/develop/lib/user/widgets/comment_card.dart

Issue Being Fixed

Issue Number: N/A

Screenshots / Recordings

Before

https://github.com/thunder-app/thunder/assets/7417301/cb062bd8-924e-498e-9584-67243a37972f

After

https://github.com/thunder-app/thunder/assets/7417301/c0aadb9d-34b1-4d59-b442-b18b8113a24f

Checklist

• [ ] Did you update CHANGELOG.md?
• [ ] Did you use localized strings where applicable?
• [ ] Did you add semanticLabels where applicable for accessibility?

[hjiangsu]

Is it safe to deleted?

It looks like we can delete it - I'm assuming this was left over from the comment refactor a while back! Nice catch 😄

[micahmo]

Ok deleted!