All subtests should be required to be triaged to consider the test to be triaged.

DW already shows untriaged subtests, but does not show them as blocking.

AC:

• [x] create ~_{CLI script}~ grafana dashboard to monitor and continuously fix untriaged subtests of triaged tests
• [x] prepare MR for DW: show all untriaged subtests as blocking
• [x] prepare MR for reporter: report on all untriaged subtests
• [x] prepare MR for gating-messenger: take all untriaged subtests into account
• [x] prepare MR for umb-messenger: take all untriaged subtests into account
• [x] if needed, communicate that now all subtests need to be triaged, and then merge the MRs above 🎉
• [x] centralize the logic behind when-to-block and use it in Reporter, Gating Reporter, UMB messenger -> moved to https://gitlab.com/groups/cki-project/-/epics/152

Jira: CKI-7223