[MTP] Print In-Progress tests and durations when timeout aborts test run

[thomhurst]

Summary

I'm experiencing some deadlock bugs in some code, and these crop up in tests. I set a timeout flag of 10 minutes so that tests don't sit there indefinitely hanging. And I see output like this when it aborts:

[+180/x0/?0] Dekaf.Tests.Integration.dll (net10.0|x64) - 2 tests running (9m 59s)

[+180/x0/?0] Dekaf.Tests.Integration.dll (net10.0|x64) - 2 tests running (10m 00s)

The test run was cancelled.
[+180/x0/?0] Dekaf.Tests.Integration.dll (net10.0|x64) - 2 tests running (10m 00s)


Test run summary: Aborted - /home/runner/work/Dekaf/Dekaf/tests/Dekaf.Tests.Integration/bin/Release/net10.0/Dekaf.Tests.Integration.dll (net10.0|x64)
  total: 180
  failed: 0
  succeeded: 180
  skipped: 0
  duration: 10m 00s 228ms

As you can see, there seems to be 2 tests that are hanging, but I never find out which ones.

Proposed Feature

When a test run is cancelled/aborted, can we print which tests were in-progress when it cancelled? For scenarios where there may be extremely slow tests, or deadlocks, this helps us narrow down which tests/the code they are testing are problematic.

[Youssef1313]

Looks quite similar to #5170