Merge branch...

Merge branch '366780-vsa-overview-total-time-add-flow-diagram-with-stages-breakdown-of-the-summation-of-all-stages' into 'master'

Replace VSA Overview "Total time" line chart with area chart

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/114484



Merged-by: Ezekiel Kigbo <3397881-ekigbo@users.noreply.gitlab.com>
Approved-by: Michael Becker <11881043-wandering_person@users.noreply.gitlab.com>
Approved-by: Ezekiel Kigbo <3397881-ekigbo@users.noreply.gitlab.com>
Approved-by: Libor Vanc <5022246-lvanc@users.noreply.gitlab.com>
Approved-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Reviewed-by: Ezekiel Kigbo <3397881-ekigbo@users.noreply.gitlab.com>
Reviewed-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Reviewed-by: Alexander Turinske <aturinske@gitlab.com>
Co-authored-by: Rudy Crespo <rcrespo@gitlab.com>