Cherry-pick #10282 (#10283)

* Revert "Reset engine controller for every new workspace (#10113)"

This reverts commit b01e2de.

Co-authored-by: Craig Long <craig.alan.long@gmail.com>

src/DynamoCoreWpf/ViewModels/Core/DynamoViewModel.cs

@@ -1873,11 +1873,7 @@ internal bool CanSelectAll(object parameter)
         public void MakeNewHomeWorkspace(object parameter)
         {
             if (ClearHomeWorkspaceInternal())
-            {
-                model.ResetEngine();
-
-                ShowStartPage = false; // Hide start page if there's one.
-            }
+                this.ShowStartPage = false; // Hide start page if there's one.
         }
 
         internal bool CanMakeNewHomeWorkspace(object parameter)