Caused by a6ed013baa
Tags live on the `AssetMetaData` of an `AssetRepresentation` (so
`metadata` in py),
`asset_data`(also pointing to `AssetMetaData`) is a member of
`FileSelectEntry` only [which the above commit tried to get rid off...]
Pull Request: https://projects.blender.org/blender/blender/pulls/123818