Blender Git Loki

Fix T92979: Emission Strength Animation read wrong in 3.0

First this was wrong for files written in 2.93 read into blender in 3.0
after the CyclesX merge.
Then this was fixed by versioning in rB6321dd3d4007.
But this caused files written in 3.0 to have this versioning applied as
well (leading to socket shifting).

Now only do the versioning for files created before the CyclesX
merge.

Maniphest Tasks: T92979

Differential Revision: https://developer.blender.org/D13173