License file filename errors with DSpace SWORD deposit

[jameswsullivan]

Describe the bug

Some submissions' license files have WWW- prefixed to them in the exported zip files, such as:

During the deposit from Vireo to DSpace, such cases give a 500 error like this:

INFO [org.purl.sword.client.Client] Checking the status code: 500
[Fatal Error] :1:1: Content is not allowed in prolog.
ERROR 1 --- [io-9000-exec-37] c.a.CustomResponseEntityExceptionHandler : SWORD deposit failed: Unprocessable Entity

On the DSpace side it provides more details pointing to the file names:

ERROR unknown 1234abcd-1234-567d-89f0-1234567891234abdc org.dspace.sword.SWORDMETSIngester @ caught exception:
org.dspace.content.crosswalk.MetadataValidationException: Manifest file references file 'Permission.pdf' not included in the zip.
        at org.dspace.content.packager.AbstractMETSIngester.getFileInputStream(AbstractMETSIngester.java:1337) ~[dspace-api-7.6.1.jar:7.6.1]

ERROR unknown 1234abcd-1234-567d-89f0-1234567891234abdc org.dspace.sword.DSpaceSWORDServer @ caught exception:
org.dspace.sword.DSpaceSWORDException: org.dspace.content.crosswalk.MetadataValidationException: Manifest file references file 'Permission.pdf' not included in the zip.
        at org.dspace.sword.SWORDMETSIngester.ingest(SWORDMETSIngester.java:173) ~[dspace-sword-7.6.1.jar:7.6.1]

To Reproduce
You might be able to catch the errors if you do a batch deposit, I'm not sure why some submissions' license files have the WWW- prefix rather than the seeded timestamp prefixes. If I rename the files in the UI it'd get rid of the WWW- and replace it with a timestamp prefix and the error would be gone.

[jameswsullivan]

@wwtamu has already found a fix and I've tested with our instance, it's here:
https://github.com/jameswsullivan/Vireo/tree/dspace-deposit-license-filename-error