**Backport:** https://codeberg.org/forgejo/forgejo/pulls/6803
## Description
Thank you for this amazing project!
I recently noticed that the icon next to the GPG key reference appears to be incorrect for commits signed by the default GPG key:
| Default GPG Key | User GPG Key |
|---------|---------|
|  |  |
Looking into the commit history of the template file, I noticed that Forgejo-signed commits originally had a distinct icon:
[gitea-unlock-cog](b918609acc) --> [octicon-shield-lock](12ddc48c5c) --> octicon-unverified (current)
Since `octicon-unverified` is also used when a commit cannot be verified (.Verification.Warning), I find it misleading for successfully signed commits. This PR changes the icon to the verified variant for better clarity.
### Tests
1. Set up automatic commit signing by Forgejo ([guide](https://forgejo.org/docs/latest/admin/signing/#automatic-signing))
2. Trigger automatic commit signing in any of the following scenarios:
- Repository Initialisation (should be the easiest)
- Wiki Changes
- CRUD actions using the editor or the API
- Merges from Pull Requests
3. Open the commit signed by Forgejo
4. Verify that the icon next to the GPG key id is `octicon-verified`:

### Documentation
- [x] I did not document these changes and I do not expect someone else to do it.
### Release notes
- [x] I want the title to show in the release notes with a link to this pull request.
<!--start release-notes-assistant-->
## Release notes
<!--URL:https://codeberg.org/forgejo/forgejo-->
- User Interface bug fixes
- [PR](https://codeberg.org/forgejo/forgejo/pulls/6803): <!--number 6803 --><!--line 0 --><!--description Zml4KHVpKTogZGlzcGxheSB2ZXJpZmllZCBpY29uIGZvciBkZWZhdWx0IGdwZyBrZXk=-->fix(ui): display verified icon for default gpg key<!--description-->
<!--end release-notes-assistant-->
Co-authored-by: shgew <shgew@noreply.codeberg.org>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6833
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Reviewed-by: Beowulf <beowulf@beocode.eu>
Co-authored-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
Co-committed-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>