* show/hide resolved: got rid of classes `ui labeled button` - ignoring them overriding each other, they were contributing three useful CSS properties in total:
```css
padding: 0;
background: none;
font-weight: 500;
```
and were also contributing an undesired margin:

* also fixed inconsistent font size between two views
* additionally got rid of verbose fomantic classes since there was already a rule that could accept their properties
* got rid of unused class `add-code-comment-right`
* added testing for the hide/show/resolve/unresolved buttons, but not related to CSS, just thought it might be useful
<!--start release-notes-assistant-->
## Release notes
<!--URL:https://codeberg.org/forgejo/forgejo-->
- User Interface changes without a feature or bug label
- [PR](https://codeberg.org/forgejo/forgejo/pulls/10268): <!--number 10268 --><!--line 0 --><!--description Y2hvcmUodWkpOiBjbGVhbnVwIHJldmlld3MgY3NzLCBpbXByb3ZlIGNvbnNpc3RlbmN5-->chore(ui): cleanup reviews css, improve consistency<!--description-->
<!--end release-notes-assistant-->
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10268
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Reviewed-by: Otto <otto@codeberg.org>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>