Add prop for 'alignment within group' to the Group component
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3563123. -->
Reported by: [pameeela](https://www.drupal.org/user/1431110)
Related to !160
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>The group component doesn't have a way to align the items within the group, so we should add this.</p>
<p>Before:<br>
<img src="https://www.drupal.org/files/issues/2025-12-15/Screenshot%202025-12-15%20at%202.46.56%E2%80%AFpm.png" alt=""></p>
<p>Afer:<br>
<img src="https://www.drupal.org/files/issues/2025-12-15/Screenshot%202025-12-15%20at%202.46.39%E2%80%AFpm.png" alt=""></p>
issue