xharness shows :tada: All 150 tests passed :tada: but clicking link shows errors

### Steps to Reproduce

1. open https://github.com/xamarin/xamarin-macios/commit/ed77f3bfd144cd8fca0cef0993eec2cc615f713d

2. look for ddfun tests

🚧 Experimental DDFun pipeline

✅ Device tests passed on iOS-DDFun on Azure DevOps(iOS-DDFun) ✅

🎉 All 150 tests passed 🎉

3. click on **Azure DevOps** link

https://dev.azure.com/devdiv/DevDiv/_build/index?buildId=3544647&view=ms.vss-test-web.test-result-details

### Expected Behavior

The link should show that no error were reported.

### Actual Behavior

There was actually a failure - so what's reported on the commit is inexact

### Environment

`master`