Add missing base pose input (#68)

# Pull Request

### What change is being made

Add missing base pose input to isaaclab example.
Make the test fail.

### Why this change is being made

Fix.

### Tested

Test is passing.

GitOrigin-RevId: 5051e894bcf2b29bdcd872d3634ea4d955232425

Author: awoll-bdai

examples/exporter_scripts/isaaclab/export_isaaclab.py

@@ -108,6 +108,11 @@ def export_isaaclab(
         context_manager=context_manager,
     )
 
+    inputs.add_base_pose(
+        articulations=articulations,
+        context_manager=context_manager,
+    )
+
     inputs.add_body_pos_and_quat(
         articulations=articulations,
         context_manager=context_manager,
@@ -168,14 +173,14 @@ def export_isaaclab(
             pause_on_failure=pause_on_failure,
         )
 
+    assert export_ok, "ONNX export validation failed"
+
     # Close simulation app.
     if simulation_app:
         print("Closing simulation app...")
         SimulationContext.clear_instance()
         simulation_app.close()
 
-    assert export_ok, "ONNX export validation failed"
-
 
 if __name__ == "__main__":
     import sys