Large space next to CKEditor 4 footnote when value is empty

Here is a patch to cast this number as a string so the width is correctly calculated.
It also add a default value of 0 only in the render of CKEditor when we used to have fn.

Although I prefer the old fn I kept the decision to render 0 instead.

Thanks for your work on this. The original JS should be modified instead of the compiled JS (ie, using the package.json watch/build scripts). Thanks!

Hi @scott_euser, sorry for the late reply, I let this slipped a little too long.
Regarding your comment about not touching the compiled filed, I had done it this way as only assets/js/ckeditor/plugin.js was modified and also this was for CK 4 which, imho, doesn't come with compiled JS.

I created a MR if it's easier for you to review.
Thank you