TEST REPORTING BUG: Wrong issue number can be reported for failing tests that are ignored

**Describe the bug**

Test runs can report the wrong issue number for ignored tests.

**To Reproduce**

See for example,
https://github.com/DynamoRIO/dynamorio/actions/runs/7731301531/job/21078628227#step:7:84492

```
====> FAILURE in debug-internal-64 <====
debug-internal-64: 902 tests passed, **** 6 tests failed, of which 2 were flaky, but ignoring 3 for i#2941: ****
(ignore: i#2941) code_api|client.attach_test
code_api|api.static_maps_mixup_novars_FLAKY
(ignore: i#2941) code_api,opt_memory|common.loglevel
(ignore: i#2941) code_api,opt_speed|common.decode-stress
code_api|tool.drcachesim.invariants
code_api|api.static_sideline_FLAKY
WARNING: maximum warning/error limit hit for release-external-64!
Manually verify whether it succeeded.
```

Note i#2941 is being reported as the issue for the attach_test failure.
We'll need to augment ignored test marking to let one specify the issue so that it makes it through to the test output.