fix(superdoc): expose header/footer edits in update callbacks#2368

luccas-harbour wants to merge 5 commits intomainsuperdoc-dev/superdoc:mainfrom

luccas/sd-2179-bug-headerfooter-edits-do-not-emit-update-events-until-blursuperdoc-dev/superdoc:luccas/sd-2179-bug-headerfooter-edits-do-not-emit-update-events-until-blurCopy head branch name to clipboard