Intermittent "Could not find NUnit2 results file" test failures

The `Package Tests > macOS > Tests > APKs 2` stage is intermittently failing on both PRs and `main` with the following errors:

```
TestApks.targets(272,5): error : Could not find NUnit2 results file after running component
`Mono.Android.NET_Tests/xamarin.android.runtimetests.NUnitInstrumentation`:
no `nunit2-results-path` bundle value found in command output!

TestApks.targets(301,5): error : Application crash detected. Could not collect performance data.

TestApks.targets(184,5): error : Execution of the following components did not complete successfully:
Mono.Android.NET_Tests/xamarin.android.runtimetests.NUnitInstrumentation
```

Example: [build 13348982](https://devdiv.visualstudio.com/DevDiv/_build/results?buildId=13348982&view=results) ([raw log](https://devdiv.visualstudio.com/0bdbc590-a062-4c3f-b0f6-9383f67865ee/_apis/build/builds/13348982/logs/1577))