[Infra][NativeAOT-iOS] Runtime tests workitems not getting sent to helix

[matouskozak]

After #107002, NativeAOT on IOS runtime tests are not getting bundled for Helix, reporting error : SendHelixJob given no WorkItems to send.

First failing build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=793084&view=logs&j=6ad81d5f-e956-5767-2437-61a9fc4dc8db&t=c71d6c6f-8520-5c9e-5bd9-f9fda7bcc121

Known Issue Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

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Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0

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[matouskozak]

@jkoritzinsky do you know what changes from your PR could be affecting the mobile bundling?

[jkoritzinsky]

I thought that my PR wouldn't have broken existing test runs... Easiest solution would be to build the nativeaot test tree instead of just the smoketests tree.

[jkoritzinsky]

Another option (which I'll try to put out a PR for today) would be to set the BuildAllTestsAsStandalone environment variable when building the smoke tests. That should put that test tree back on the old system.