Only expose default actions via const_default_action_id if they're actually const. See #309
Only expose default actions via const_default_action_id if they're actually const. See #309

mbudiu-vmw/p4c-clone,hanw/p4c,hanw/p4c,p4lang/p4c,hanw/p4c,mbudiu-vmw/p4c-clone,mbudiu-vmw/p4c-clone,p4lang/p4c,hanw/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,p4lang/p4c,p4lang/p4c