bim.override_mesh_separate - invoke menu if called without argument

Mimicking default mesh.separate behaviour.

@Gorgious56 I don't know if you've seen this before, but you might be interested - I've found a way to figure if operator wasn't called without any arguments.

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

@@ -80,6 +80,11 @@ class OverrideMeshSeparate(bpy.types.Operator, tool.Ifc.Operator):
         items=[(i.identifier, i.name, i.description) for i in blender_type_prop.enum_items],
     )
 
+    def invoke(self, context, event):
+        if "type" not in self.properties:
+            return bpy.ops.wm.call_menu(name="BIM_MT_hotkey_separate")
+        return self.execute(context)
+
     def _execute(self, context):
         obj = context.active_object
         assert obj