Mesh Asset testing

Currently we have basic image and values testing - we should expand this to include a concrete mesh test to validate the use of mesh to mesh or values to mesh inferencing and validate that the tensor format will work for our use cases.

Start by reviewing the existing basic image and values tests to understand their structure and coverage. Add a concrete mesh test covering mesh-to-mesh or values-to-mesh inferencing, and verify that the tensor format works for the intended use cases.

Written by the indexing model from the issue text.