Merge branch '417444-add-popover-next-to-dashboard-page-title' into 'master'

Add help text to indicate dashboard limitation

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/127110



Merged-by: Andrew Fontaine <afontaine@gitlab.com>
Approved-by: Fiona Neill <fneill@gitlab.com>
Approved-by: Andrew Fontaine <afontaine@gitlab.com>
Co-authored-by: Miguel Rincon <mrincon@gitlab.com>