Merge branch '435515-add-popover' into 'master'

Add info popover to the Value stream dashboard - Usage overview panel

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142593



Merged-by: Zack Cuddy <zcuddy@gitlab.com>
Approved-by: Zack Cuddy <zcuddy@gitlab.com>
Reviewed-by: Zack Cuddy <zcuddy@gitlab.com>
Reviewed-by: Alex Pennells <apennells@gitlab.com>
Co-authored-by: Alex Pennells <apennells@gitlab.com>