Merge branch '508808-wiki-comments-draft' into 'master'

Ensure that draft id for each wiki note is unique

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/180360



Merged-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Approved-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Reviewed-by: Natalia Tepluhina <ntepluhina@gitlab.com>
Co-authored-by: Himanshu Kapoor <hkapoor@gitlab.com>