[frontend] rename files on download to avoid UUID as names (#9634)

[labo-flg]

When downloading a file, we use direct links to the storage.
Some files are generated and named as UUID, not very easy to use once downloaded.

In this PR, I add a quick workaround to be able to override the filename at download time, and use it for exclusion lists and support packages.

Note that a proper implementation would be to do this backend side, so that we are able to fetch files with proper naming, according to data / business logic. This is significantly more work than this workaround.

closes #9634

Issue #9635 addresses a long-term solution, for another PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.56%. Comparing base (34871d2) to head (209789f).
Report is 4 commits behind head on release/6.5.0.

Additional details and impacted files

@@              Coverage Diff               @@
##           release/6.5.0    #9618   +/-   ##
==============================================
  Coverage          64.56%   64.56%           
==============================================
  Files                638      638           
  Lines              61833    61833           
  Branches            6858     6858           
==============================================
  Hits               39923    39923           
  Misses             21910    21910           

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