This is basically the same issue as https://www.drupal.org/node/807126 that was filed against the D6 branch of ImageField. That issue was closed as "fixed" by @quicksketch by pointing to the ImageField Tokens module:

Now with Tokens in core, it makes sense to take advantage of them and use them where possible.
PS: should support transliteration once in core (#904)
PR by @BWPanda: https://github.com/backdrop/backdrop/pull/3068
Recent comments
Out of curiosity: why are these tags only relevant for admins? Don't "regular" editors on that site also need them under circumstances? Yes, the editors play nicely, no problem to...
Specific tags to work in CKEditor 5
Worked like a charm! Exactly what I envisioned... now I can edit the ruby text right in the editor, sweet:) Thank you! For those who may have a similar issue, try TinyMCE, create a new "text...
Specific tags to work in CKEditor 5
Yes, you can use TinyMCE on some content and CKEditor5 in others. There is no problem having both enabled on a system.
Specific tags to work in CKEditor 5