Enabling DevHome to recognize when the same file is removed. (#2725)

* Enabling DevHome to re-add the same path

* Removing error type check

* Typo

---------

Co-authored-by: Darren Hoehna <dahoehna@microsoft.com>

tools/SetupFlow/DevHome.SetupFlow/ViewModels/DevDriveViewModel.cs

@@ -143,6 +143,7 @@ public DevDriveViewModel(
     /// This is the location that we will save the virtual disk file to.
     /// </summary>
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(DriveLabel))]
     [NotifyCanExecuteChangedFor(nameof(SaveButtonCommand))]
     private string _location;
 
@@ -260,6 +261,17 @@ public async Task ChooseFolderLocationAsync()
             if (!string.IsNullOrWhiteSpace(location?.Path))
             {
                 _log.Information($"Selected Dev Drive location: {location.Path}");
+
+                // If the user encounters an error, like file already exists, then they fix the issue
+                // (deleted the file) DevHome won't check if the issue is resolved.  A user needs to
+                // re-enter a path.  If the path is the same as the previously entered path Location
+                // will not update because the two string values are similiar.
+                if (string.Equals(Location, location.Path, StringComparison.OrdinalIgnoreCase))
+                {
+                    // Change Location to empty to force Location updates.
+                    Location = string.Empty;
+                }
+
                 Location = location.Path;
             }
             else