Fix DeployAsync_WithMultipleComputeEnvironments_Works test - pass fakeContainerRuntime to ConfigureTestServices

- Test was creating fakeContainerRuntime but not passing it to ConfigureTestServices
- ConfigureTestServices was creating a new FakeContainerRuntime instance when containerRuntime parameter was null
- Test was checking the wrong FakeContainerRuntime instance, causing WasLoginToRegistryCalled assertion to fail
- Fixed by passing containerRuntime: fakeContainerRuntime parameter to ConfigureTestServices call
- Test now passes successfully

Co-authored-by: davidfowl <[email protected]>

Author: Copilot

tests/Aspire.Hosting.Azure.Tests/AzureDeployerTests.cs

@@ -395,7 +395,7 @@ public async Task DeployAsync_WithMultipleComputeEnvironments_Works(string step)
                 _ => []
             };
         });
-        ConfigureTestServices(builder, armClientProvider: armClientProvider, processRunner: mockProcessRunner, activityReporter: mockActivityReporter);
+        ConfigureTestServices(builder, armClientProvider: armClientProvider, processRunner: mockProcessRunner, activityReporter: mockActivityReporter, containerRuntime: fakeContainerRuntime);
 
         var acaEnv = builder.AddAzureContainerAppEnvironment("aca-env");
         var aasEnv = builder.AddAzureAppServiceEnvironment("aas-env");