DOC-3355: New chat button was not disabled when the chat was empty#4074

kemister85 merged 2 commits intofeature/8.5.0/DOC-3355tinymce/tinymce-docs:feature/8.5.0/DOC-3355from

feature/8.5.0/DOC-3355_TINY-14094tinymce/tinymce-docs:feature/8.5.0/DOC-3355_TINY-14094Copy head branch name to clipboard