Merge branch '436483-epic-creation-with-synced-work-item-copy-color-widget' into 'master'

Update color widget to use callbacks

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142335



Merged-by: Nicolas Dular <ndular@gitlab.com>
Approved-by: Nicolas Dular <ndular@gitlab.com>
Approved-by: Abhilash Kotte <akotte@gitlab.com>
Reviewed-by: Alejandro Rodríguez <alejandro@gitlab.com>
Reviewed-by: Nicolas Dular <ndular@gitlab.com>
Reviewed-by: Abhilash Kotte <akotte@gitlab.com>
Co-authored-by: Eugenia Grieff <egrieff@gitlab.com>