Ollama ChatClientIntegrationTests.CompleteAsync_StructuredOutputEnum fails locally

[stephentoub]

 Microsoft.Extensions.AI.OllamaChatClientIntegrationTests.CompleteAsync_StructuredOutputEnum

  Message: 
Assert.Equal() Failure: Values differ
Expected: Arm64
Actual:   Arm

  Stack Trace: 
ChatClientIntegrationTests.CompleteAsync_StructuredOutputEnum() line 665
--- End of stack trace from previous location ---

cc: @SteveSandersonMS

[SteveSandersonMS]

I ran this with "Run until failure" in VS and got 4 passes then a failure:

To be honest I think this is a fair pass rate given the way the test is set up. M2 chips are ARM-based, even though ARM64 is a more precise statement. It's totally reasonable for this model to return ARM instead of ARM64 sometimes.

Given that what we want from our tests is a reliable signal about whether things are working or not, I'll update the test so that it's a less ambiguous test case by defining a different enum type.