Ollama ChatClientIntegrationTests.CompleteAsync_StructuredOutputEnum fails locally

```
&thinsp;Microsoft.Extensions.AI.OllamaChatClientIntegrationTests.CompleteAsync_StructuredOutputEnum

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

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

cc: @SteveSandersonMS 