Create missing LayerManager fsm in dynamic srv xua asps
Dynamic xUA ASPs in transport_role=server where missing initialization +start of its LayerManager, meaning they had no xua_default_lm_fsm instance attached. Previous the xua_default_lm_fsm didn't do anything internally, but since recently ir properly transitions through states in SG role too, so we want to handle blocking/unblocking, etc.
