51b2c31c01
The new anti-aliasing feature added in 299a581b1b didn't contain
versioning for startup.blend defaults, this caused the versioning
implemented in versioning_450.cc to be used instead, which was meant
to ensure older files stay the same. This thus caused the feature to be
effectively disabled in default/factory startup files.
Pull Request: https://projects.blender.org/blender/blender/pulls/143711