Module does not work in d10 due to .once js issue

Here is a patch that seems to work correctly for us, done following the guide at https://www.drupal.org/node/3158256 →

At this line the .once method was called twice, but it does seem to work correctly with just one with the new method, so I went with that.

Please test! :)

Applying the patch from #2 rendered a duplicate the same way described in https://www.drupal.org/project/textfield_counter/issues/3257307 🐛 Duplicate counter on paragraph fields Closed: duplicate .

I added a filtering to $(once("textfield-counter-text-watcher", "." + fieldSettings.key[index])) as well and it helped.

Please review and test.

#4 would not apply for me. I re-rolled it.