[migration] consider extra_props in rdef created during attribute creation hook
else we may miss important data such as type parametrization (see
postgis.Geometry for instance).
Related to #7569998
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
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%(long-license)s
"""%(distname)s specific hooks and operations"""