Fixed dropdown menu width

[joelit]

Reasons for creating this PR

A recent review showed weird behaviour in the search bar autocomplete, screenshots in the related issue.

Link to relevant issue(s), if any

• Closes Search bar dropdown menu styling is inconsistent #1761

Description of the changes in this PR

Apparently this was a regression caused by a recent commit with some sort of difficulties with merge (vocab-search.js, line -253, +260)

This PR reverts to the previous situation.

Known problems or uncertainties in this PR

Checklist

• phpUnit tests pass locally with my changes
• I have added tests that show that the new code works, or tests are not relevant for this PR (e.g. only HTML/CSS changes)
• The PR doesn't reduce accessibility of the front-end code (e.g. tab focus, scaling to different resolutions, use of .sr-only class, color contrast)
• The PR doesn't introduce unintended code changes (e.g. empty lines or useless reindentation)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[osma]

lgtm