Since now we delegate the evaluation of the last subsurf modifier in the stack
to the draw code, Cycles does not get a subdivided mesh anymore. This is because
the subdivision wrapper for generating a CPU side subdivision is never created
as it is only ever created via `BKE_object_get_evaluated_mesh` which Cycles does
not call (rather, it accesses the Mesh either via `object.data()`, or via
`object.to_mesh()`).
This ensures that a subdivision wrapper is created when accessing the object data
or converting an Object to a Mesh via the RNA/Python API.
Reviewed by: brecht
Differential Revision: https://developer.blender.org/D14048
56407432a6