Fix #29689, #29702: cycles render crash with node setups with non-cycles nodes, after group socket refactoring.
Fix #29689, #29702: cycles render crash with node setups with non-cycles nodes,
after group socket refactoring.

tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,pyrochlore/cycles,pyrochlore/cycles,pyrochlore/cycles,tangent-opensource/coreBlackbird