Dashboard checks are green on Github, still running on dashboard #193132

Help us understand the severity of this issue

• breakage; unable to contribute or trigger builds will no workarounds
• inconvenient workarounds exist, but significant effort required
• needed for a Flutter team-wide priority (already agreed upon)
• nice-to-have; none of the above

What do you need help with

Observed in flutter/packages#12959 after rebase from fbc99fb to 180152d

I noticed the Dashboard checks on Github status was green, and it said it went green in 10 minutes, which, sus.
When I clicked through to the dashboard, all the checks were still running in https://flutter-dashboard.appspot.com/#/presubmit?repo=packages&pr=12959&sha=180152d9465d0640f423d8da9ec31eb7db1c1b46&job=Linux%20dart_unit_test_shard_1%20stable even though the status on GitHub was reported as finished and green.

May be related to #191610 but it seems different. I was looking right at it and the status was green instead of grey/neutral