Make top-bar--gin.html.twig compatible with new navigation topbar regions.
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3495024. -->
Reported by: [amangrover90](https://www.drupal.org/user/3602433)
Related to !552 !555
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Recent changes in navigation module(which brings 3 regions in navigation top bar - Issue - <a href="https://www.drupal.org/project/drupal/issues/3484564">https://www.drupal.org/project/drupal/issues/3484564</a>) make Gin form actions(Save, delete, hide side bar panel etc) as well as More actions(local tasks such as Edit, View, Delete, Revisions) disappear.</p>
<h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<p>1. Install latest Drupal 11.x-dev.<br>
2. Install gin theme.<br>
3. Enable navigation and navigation_top_bar module.<br>
For node creation:<br>
4. Go to /node/add/article.<br>
5. See that the Save button is missing from the page, along with Hide pannel button.<br>
For node edit:<br>
1. Try to edit already created node.<br>
2. See that the Save button, Delete and Hide panel buttons are missing.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Change top-bar--gin.html.twig compatible with the 3 regions introduced in <a href="https://git.drupalcode.org/project/drupal/-/commit/dc129a551f014083f220db7aee3c58aee52f83d0">this commit</a>.</p>
<h3 id="summary-remaining-tasks">Remaining tasks</h3>
<h3 id="summary-ui-changes">User interface changes</h3>
<h3 id="summary-api-changes">API changes</h3>
<h3 id="summary-data-model-changes">Data model changes</h3>
issue