GH-107167
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Validate extension JSON: Error: Field 'classes/EditorExportPreset/methods/get_script_export_mode': meta was removed.
Validate extension JSON: Error: Field 'classes/EditorExportPreset/methods/get_script_export_mode/return_value': type changed value in new API, from "int" to "enum::EditorExportPreset.ScriptExportMode".

Change return type from `int` to `EditorExportPreset.ScriptExportMode` enum. Compatibility method registered.
