[JENKINS-66968] Fix scaling of buttons in security realm

[NotMyFault]

Use a medium sized gear sprite in the security realm overview to match with the delete button size.

Before:

After:

Proposed changelog entries

Fix scaling of buttons in the security realm overview

Submitter checklist

• (If applicable) Jira issue is well described: https://issues.jenkins.io/browse/JENKINS-66968
• Changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developer, depending on the change). Examples
  • Fill-in the Proposed changelog entries section only if there are breaking changes or other changes which may require extra steps from users during the upgrade
• Appropriate autotests or explanation to why this change has no tests
• For dependency updates: links to external changelogs and, if possible, full diffs

Desired reviewers

@mention

Maintainer checklist

Before the changes are marked as ready-for-merge:

• There are at least 2 approvals for the pull request and no outstanding requests for change
• Conversations in the pull request are over OR it is explicit that a reviewer does not block the change
• Changelog entries in the PR title and/or Proposed changelog entries are correct
• Proper changelog labels are set so that the changelog can be generated automatically
• If the change needs additional upgrade steps from users, upgrade-guide-needed label is set and there is a Proposed upgrade guidelines section in the PR title. (example)
• If it would make sense to backport the change to LTS, a Jira issue must exist, be a Bug or Improvement, and be labeled as lts-candidate to be considered (see query).

[oleg-nenashev]

Do we need backporting of this defect into the next LTS baseline? It seems to be minor, but at the same time backporting is straightforward. @NotMyFault could you please create a Jira issue so that we could consider it for backporting?

We may merge it in 24 hours if there is no negative feedback. Please see the merge process documentation for more information about the merge process

[NotMyFault]

Do we need backporting of this defect into the next LTS baseline? It seems to be minor, but at the same time backporting is straightforward. @NotMyFault could you please create a Jira issue so that we could consider it for backporting?

We may merge it in 24 hours if there is no negative feedback. Please see the merge process documentation for more information about the merge process

I wasn't sure whether this is worth to be included in the next LTS or not, hence no issue till now, as it being a quite minor fix. However, I've risen an issue at https://issues.jenkins.io/browse/JENKINS-66968

[daniel-beck]

Thanks!

Perhaps it makes sense to look into whether both icons could be on the same line? Seems odd to have them stacked. This PR makes sense as is though.

[daniel-beck]

Do we need backporting of this defect into the next LTS baseline?

No.