Update crash summary expectation

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 3c3b90fe-16c9-4122-9d31-caba5e1f8972

Author: Evangelink

test/dotnet.Tests/CommandTests/Test/GivenDotnetTestBuildsAndRunsTests.cs

@@ -698,9 +698,7 @@ at Microsoft.DotNet.Cli.Commands.Test.TestApplicationActionQueue.Read(BuildOptio
 
                 result.StdErr.Should().Contain("System.InvalidOperationException: A test session start event was received without a corresponding test session end.");
 
-                // TODO: It's much better to introduce a new kind of "summary" indicating
-                // that the test app exited with zero exit code before sending test session end event
-                result.StdOut.Should().Contain("Test run summary: Passed!")
+                result.StdOut.Should().Contain("Test run summary: Failed!")
                     .And.Contain("total: 1")
                     .And.Contain("succeeded: 1")
                     .And.Contain("failed: 0")