Update asserts to improve diagnosability of dartlab test failure

[RikkiGibson]

Teams thread: https://teams.microsoft.com/l/message/19:ed7a508bf00c4b088a7760359f0d0308@thread.skype/1720564915113?tenantId=72f988bf-86f1-41af-91ab-2d7cd011db47&groupId=4ba7372f-2799-4677-89f0-7a1aaea3706c&parentMessageId=1720564915113&teamName=.NET%20Developer%20Experience&channelName=InfraSwat&createdTime=1720564915113

We are trying to learn more about recent dartlab test failures:

  Failed Roslyn.VisualStudio.NewIntegrationTests.CSharp.CSharpBuild.BuildWithCommandLine (VS2022) [16 s]
  Error Message:
   Assert.Equal() Failure
Expected: 0
Actual:   1
  Stack Trace:
     at Roslyn.VisualStudio.NewIntegrationTests.CSharp.CSharpBuild.<BuildWithCommandLine>d__2.MoveNext() in /_/src/VisualStudio/IntegrationTest/New.IntegrationTests/CSharp/CSharpBuild.cs:line 69
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
  Failed Roslyn.VisualStudio.NewIntegrationTests.VisualBasic.BasicEditAndContinue+CommonProjectSystem.EditLambdaExpression (VS2022) [18 s]
  Error Message:
   Assert.Empty() Failure
Collection: ["TestProj.vbproj(1, 1): warning NU1604: Project dep"...]
  Stack Trace:
     at Roslyn.VisualStudio.NewIntegrationTests.VisualBasic.BasicEditAndContinue.<EditLambdaExpression>d__10.MoveNext() in /_/src/VisualStudio/IntegrationTest/New.IntegrationTests/VisualBasic/BasicEditAndContinue.cs:line 144
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
  Failed Roslyn.VisualStudio.NewIntegrationTests.VisualBasic.BasicEditAndContinue+CommonProjectSystem.MultiProjectDebuggingWhereNotAllModulesAreLoaded (VS2022) [11 s]
  Error Message:
   Assert.Empty() Failure
Collection: ["TestProj.vbproj(1, 1): warning NU1604: Project dep"...]
  Stack Trace:
     at Roslyn.VisualStudio.NewIntegrationTests.VisualBasic.BasicEditAndContinue.<MultiProjectDebuggingWhereNotAllModulesAreLoaded>d__13.MoveNext() in /_/src/VisualStudio/IntegrationTest/New.IntegrationTests/VisualBasic/BasicEditAndContinue.cs:line 250
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)