CKeditor 5 advanced link form alter

any suggestion here? I am facing this issue as well. Just want some tips.

Same issue for me ; if anyone has an idea...

I think unfortunately due to the way CK5 was rebuilt to not utilize any dialogs there's no way to make alterations without creating your own custom CK5 plugin to do what you need. It's a pain not being able to make quick alterations via a form alter anymore.

In Drupal 10 with CKEditor 5, the old HOOK_form_editor_link_dialog_alter used for CKEditor 4 no longer applies, as CKEditor 5 uses a modular JavaScript-based system for forms like the link dialog. To customize or alter the link form, you need to create a custom CKEditor plugin.