Fix equivalence key for Populate-Switch

src/Analyzers/Core/CodeFixes/PopulateSwitch/AbstractPopulateSwitchCodeFixProvider.cs

@@ -222,7 +222,7 @@ public sealed override Task RegisterCodeFixesAsync(CodeFixContext context)
         private class MyCodeAction : CustomCodeActions.DocumentChangeAction
         {
             public MyCodeAction(string title, Func<CancellationToken, Task<Document>> createChangedDocument)
-                : base(title, createChangedDocument)
+                : base(title, createChangedDocument, title)
             {
             }
         }