process folder should check that the pattern it is matching to get the filelist to process does not include folders

[peichins]

When classifying a whole folder of parquet files, the glob that matches the files ending in .parquet also returns any folders ending in .parquet.

We simply need to ensure it only returns folders here:

perch-runner/src/inference_parquet.py

Line 112 in 211c97e

embeddings_files_relative = [path.relative_to(input_path) for path in Path(input_path).rglob('*.parquet')]

The generate folder of embeddings already does this for wav files:

perch-runner/src/embed_audio_slim.py

Line 51 in 211c97e

source_files = [file.relative_to(source_folder) for file in source_folder.rglob('*wav') if file.is_file()]