docs: Ignore meta-class bases in dynamic docstring generation
docs: Ignore meta-class bases in dynamic docstring generation

Skip attempts at generating a doc string for GObject meta-class bases
since they do not contain an __info__ attribute.
This circumvents errors with documentation generators (Sphinx).

pexip/pygobject,GNOME/pygobject,GNOME/pygobject,GNOME/pygobject,sfeltman/pygobject,pexip/pygobject,sfeltman/pygobject,pexip/pygobject,sfeltman/pygobject