launcher: hide grid options for foldables

Some grid options are too dense for foldables (those with 5 icons), so
we are hiding them on those devices.

This also move the parsing to be done on InvariantDeviceProfile only.

Fixes: 183140646
Test: open Wallpaper & style and change app grid options
Change-Id: I771571db02709db5d0f814236060c57ce0180cd1