file names that are entirely numbers and symbols fail

[magorlick]

Describe the bug When you ingest a file name that is entirely numbers and symbols the ingestion fails.

To Reproduce Steps to reproduce the behavior:

1. Start with a csv or parquet file you know works in Rill Developer
2. Change the name to '2022-08-09'
3. Try to import the file
4. See error
5. Change the name to '2022-08-09_data'
6. Try to import the file
7. File ingests

Expected behavior File names should be sanitized for the user so they can be ingested as a source.