Merge branch '439514-insights-tracking-event-merge-request-charts' into 'master'

Track Insights merge request chart item click events

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143126



Merged-by: Michael Lunøe <michael.lunoe@gmail.com>
Approved-by: Michael Lunøe <michael.lunoe@gmail.com>
Reviewed-by: Michael Lunøe <michael.lunoe@gmail.com>
Reviewed-by: Ankit Panchal <apanchal@gitlab.com>
Co-authored-by: Rudy Crespo <rcrespo@gitlab.com>