[stable30] Disable attachment upload on federated shares

[backportbot]

Backport of PR #7183

[mejo-]

@max-nextcloud it seems like the node test are failing because stable30 was not ported to vitest yet.

[max-nextcloud]

it seems like the node test are failing because stable30 was not ported to vitest yet.

That makes sense - let's dump the tests then. This was helpful for development and to prevent regressions. But any new code that passes these tests on stable31 is very unlikely to break this when backported.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.68%. Comparing base (ad0a087) to head (664edb8).
Report is 4 commits behind head on stable30.

Additional details and impacted files

@@            Coverage Diff            @@
##           stable30    #7235   +/-   ##
=========================================
  Coverage     53.68%   53.68%           
=========================================
  Files           116      116           
  Lines          2578     2578           
  Branches        527      527           
=========================================
  Hits           1384     1384           
  Misses         1066     1066           
  Partials        128      128           

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