Remove explicit 'None' option on optional props
>>> [!note] Migrated issue
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<!-- Migrated from issue #3557544. -->
Reported by: [pameeela](https://www.drupal.org/user/1431110)
Related to !115
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>A bunch of components have optional props where making no selection is valid, and there is also an explicit 'None' option, resulting in a double None in the select list.</p>
<p><img src="https://www.drupal.org/files/issues/2025-11-13/Screenshot%202025-11-13%20at%202.18.41%E2%80%AFpm.png" alt=""></p>
<p>We should ensure this doesn't happen, it looks like a bug. Where the prop is optional, making no selection should be the way to select none.</p>
issue