Fix file locations when the filename has special characters

**Motivation**
Due to the bug fixes in #4426, there could be files sotred in the `DiskStorage` (local) for which the location has the wrong filename in it.

Example:
If the filename is `[tag]file.txt`, the file would be saved at `/some/path/%5Btag%5Dfile.txt` instead of `/some/path/[tag]file.txt`. This is only the case for local files, not remotes ones which are correct.

There could be a utility that corrects both the file location and the location file attribute.

Start by locating the DiskStorage implementation and any tests covering local file locations. Reproduce the case with a filename such as [tag]file.txt and compare the stored path and location attribute with remote behavior. Done means both local values retain the literal filename rather than its URL-encoded form.

Written by the indexing model from the issue text.