5b65e2dd7c
The STL exporter was enforcing file paths with an extension when used from the file browser. This would cause oddness during Batch export mode and was different than the prior Python based exporter[1]. Permit the exporter to accept names without an extension as before. [1] [Prior python exporter](https://projects.blender.org/blender/blender-addons/src/branch/blender-v4.0-release/io_mesh_stl/__init__.py#L239) Pull Request: https://projects.blender.org/blender/blender/pulls/118777