jQuery.once() is deprecated.

Hello Maintainers,
I have provided a patch to fix this issue.
To get more information visit https://www.drupal.org/node/3158256 →
Please review it.

Thanks!

This is far more involved than just changing from core/jquery.once to core/once in the library. Also, we already have this change in our d10 version. This won't change for the d9 version. Closing

@johnlutz,
Thanks for your review.