Intermittent Flight test failure on MacOS

[adamreeve]

Describe the bug, including details regarding any error messages, version, and platform.

Examples:

• https://github.com/apache/arrow-dotnet/actions/runs/17538632413/job/49806391914
• https://github.com/apache/arrow-dotnet/actions/runs/17364231837/job/49288516869
• https://github.com/apache/arrow-dotnet/actions/runs/17364167580/job/49288494277

[xUnit.net 00:00:02.72]     Apache.Arrow.Flight.Tests.FlightTests.EnsureCallRaisesRequestCancelled [FAIL]
  Failed Apache.Arrow.Flight.Tests.FlightTests.EnsureCallRaisesRequestCancelled [48 ms]
  Error Message:
   System.InvalidOperationException : Unable to get the status because the call is not complete.
  Stack Trace:
     at Grpc.Net.Client.Internal.GrpcCall`2.GetStatus()
   at Grpc.Net.Client.Internal.HttpClientCallInvoker.Callbacks`2.<>c.<.cctor>b__4_1(Object state)
   at Grpc.Core.AsyncCallState.GetStatus()
   at Grpc.Core.AsyncServerStreamingCall`1.GetStatus()
   at Grpc.Core.AsyncCallState.GetStatus()
   at Grpc.Core.AsyncServerStreamingCall`1.GetStatus()
   at Apache.Arrow.Flight.Tests.FlightTests.EnsureCallRaisesRequestCancelled() in /Users/runner/work/arrow-dotnet/arrow-dotnet/test/Apache.Arrow.Flight.Tests/FlightTests.cs:line 523
--- End of stack trace from previous location ---