Full Screen button produces a JS error

Thank you @bkosborne for reporting the issue

Temporary solution is to downgrade to 1.2.4 when not using other premium features sub-modules.

I have prepared a patch that makes fullscreen working both with an w/o premium features modules.
Patch applies fof 1.2.6 (probably also 1.2.5)

Thank you. Confirmed this makes the button usable. But yeah, as mentioned in 🐛 Full Screen button does not work when used in Layout Builder's sidebar Active , it doesn't actually go full height of the viewport anymore.

Patch from this issue has been already merged into the codebase, we've missed this one :)

An official fullscreen plugin for CKEditor 5 is about to be released, so we're starting to work on the migration.