Fix representation items / booleans UI prioritizing item mode object over active obj

It led to confusion when object A would be in Item Mode and you open properties for object B and try to show rep items for B and UI would be unresponsive.

src/bonsai/bonsai/bim/module/geometry/ui.py

@@ -225,7 +225,7 @@ class BIM_PT_representation_items(Panel):
             RepresentationItemsData.load()
 
         props = tool.Geometry.get_geometry_props()
-        obj = props.representation_obj or tool.Blender.get_active_object()
+        obj = tool.Geometry.get_active_or_representation_obj()
         assert obj
         props = tool.Geometry.get_object_geometry_props(obj)
 

src/bonsai/bonsai/bim/module/void/data.py

@@ -118,23 +118,24 @@ class BooleansData:
 
     @classmethod
     def load(cls):
+        # Only called when some object is active.
         cls.data = {}
         cls.data["total_booleans"] = cls.booleans()
         cls.data["manual_booleans"] = cls.manual_booleans()
         cls.is_loaded = True
 
     @classmethod
-    def booleans(cls):
-        props = tool.Geometry.get_geometry_props()
-        obj = props.representation_obj or bpy.context.active_object
+    def booleans(cls) -> list[ifcopenshell.entity_instance]:
+        obj = tool.Geometry.get_active_or_representation_obj()
+        assert obj
         if not (representation := tool.Geometry.get_active_representation(obj)):
             return []
         return tool.Model.get_booleans(representation=representation)
 
     @classmethod
-    def manual_booleans(cls):
-        props = tool.Geometry.get_geometry_props()
-        obj = props.representation_obj or bpy.context.active_object
+    def manual_booleans(cls) -> list[ifcopenshell.entity_instance]:
+        obj = tool.Geometry.get_active_or_representation_obj()
+        assert obj
         if not (representation := tool.Geometry.get_active_representation(obj)):
             return []
         return tool.Model.get_manual_booleans(tool.Ifc.get_entity(obj), representation=representation)