User/ryanbod/fix unittests (#5191)

* Fixing PowerLauncherViewModelTest.cs.  These OpenConsole functionality was accidentlly removed in a merge conflict, which broke the build.  The build was fixed, but the unit tests didn't work.  034079b441 is the offending change.

* Color picker tests need to remove the ShellPage.DefaultSndMSGCallback on cleanup.

* Fixing casing that was updated in previous change.

src/core/Microsoft.PowerToys.Settings.UnitTest/ViewModelTests/PowerLauncherViewModelTest.cs

@@ -80,6 +80,7 @@ namespace ViewModelTests
 
             viewModel.OpenPowerLauncher = openPowerLauncher;
             viewModel.OpenFileLocation = openFileLocation;
+            viewModel.OpenConsole = openConsole;
             viewModel.CopyPathLocation = copyFileLocation;
 
             Assert.AreEqual(4, sendCallbackMock.TimesSent);