Add NativeAOT checked leg

[MichalStrehovsky]

This is the same as the release leg, but checked runtime and on fewer queues (only Win x64 and Linux arm64).

Cc @dotnet/ilc-contrib

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label.

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[ghost]

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Issue Details

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This is the same as the release leg, but checked runtime and on fewer queues (only Win x64 and Linux arm64).

Cc @dotnet/ilc-contrib

Author:	MichalStrehovsky
Assignees:	MichalStrehovsky
Labels:	area-Infrastructure
Milestone:	-

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[MichalStrehovsky]

If I'm reading this right, we're taking a codepath on Windows Nano that we should not be taking on Nano.

Going to debug this in the CI since I have no clue how to easily get a Nano environment.

Unhandled Exception: System.Diagnostics.DebugProvider+DebugAssertException: SetEnvironmentVariable failed: 0
   at System.Diagnostics.DebugProvider.Fail(String, String) + 0x36
   at System.Diagnostics.Debug.Fail(String, String) + 0x21
   at System.Environment.SetEnvironmentVariableFromRegistry(String variable, String value, Boolean fromMachine) + 0x184
   at System.Environment.SetEnvironmentVariable(String variable, String value, EnvironmentVariableTarget target) + 0x6c
   at System.Tests.GetEnvironmentVariable.EnumerateEnvironmentVariables(EnvironmentVariableTarget target) + 0x148

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[MichalStrehovsky]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).