Blender Git Loki

Fix T72625: Outliner visibility keying doesn't carry over from 2.79b

During development of Blender 2.80 the `Object.hide` property was removed,
and later reintroduced in rB5e968a996a53 as `Object.hide_viewport`. Of
course there are some technical details missing in this summary, but this
is the view that's given in the 2.80 release notes.

FCurves on `Object.hide` weren't updated in versioning code, resulting in
the property no longer being animated. This commit corrects the RNA path
of such FCurves.