GH-106121
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Validate extension JSON: Error: Field 'classes/EditorUndoRedoManager/methods/create_action/arguments': size changed value in new API, from 4 to 5.
Validate extension JSON: Error: Field 'classes/EditorUndoRedoManager/methods/create_action/arguments': size changed value in new API, from 3 to 5.

New argument added. Compatibility method registered.
