Local file:// URLs with URL-escaped paths fail to open on LocalFileSystem

[Sharon-codes]

Bug summary

When a local dataset path is provided via ile:// URI and contains escaped characters (e.g. %20, %27), _init_filesystem() passes the escaped path through to LocalFileSystem. This causes FileNotFoundError when opening files.

Reproduction

1. Create a local directory whose name contains spaces or apostrophes.
2. Convert it to URI using Path(...).as_uri().
3. Call _init_filesystem(uri).
4. Attempt s.open(f"{path}/v3-config.json").

Actual behavior

The returned path still contains URL-escaped characters and file open fails.

Expected behavior

For local filesystems, URL-escaped characters should be decoded before file operations.

Proposed fix

After url_to_fs(...), detect local protocols (ile/local) and apply URL decoding (urllib.parse.unquote) to the resolved path before returning it.