Scripts in HTML block

How do scripts in HTML block work?

I have enabled "Settings -> Editor -> Allow execution of scripts within HTML blocks" and then added the following HTML to HTML block:

<div>
<blockquote class="twitter-tweet" data-dnt="true" data-theme="dark"><p lang="zxx" dir="ltr"><a href="https://t.co/jFHhlItpRq">https://t.co/jFHhlItpRq</a></p>— X (@X) <a href="https://twitter.com/X/status/1847366364476137801?ref_src=twsrc%5Etfw">October 18, 2024</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
</div>

expecting the script to be run and to see:

image.png

but all I got was:

image.png

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