In Blender 4.3 all the EEVEE Legacy compatibility Python API calls for materials in were removed. All Python code that makes use of that API need to be updated to make use of the new API. This commit updates two built in Python scripts to use the new API to avoid errors like the one reported in #130822 Candidate for 4.3.1 corrective release Pull Request: https://projects.blender.org/blender/blender/pulls/130873