add fix

Author: ooctipus

source/isaaclab_experimental/isaaclab_experimental/managers/scene_entity_cfg.py

@@ -15,7 +15,6 @@
 
 import warp as wp
 
-from isaaclab.assets.articulation.base_articulation import BaseArticulation
 from isaaclab.managers.scene_entity_cfg import SceneEntityCfg as _SceneEntityCfg
 
 if TYPE_CHECKING:
@@ -45,7 +44,7 @@ def resolve(self, scene: InteractiveScene):
         entity = scene[self.name]
 
         # -- Warp joint mask / ids for articulations
-        if isinstance(entity, BaseArticulation):
+        if hasattr(entity, "num_joints"):
             if self.joint_ids == slice(None):
                 joint_ids_list = list(range(entity.num_joints))
                 mask_list = [True] * entity.num_joints