Make jobs readable for admins+teamManagers+superusers

[fm3]

The job list should still only show the jobs of the requesting user. But if an admin or teamManager or superUser hast the id/link to a job by one of their managed users, they should be able to view its properties (GET api/jobs/:id) and access exported files.

Steps to test:

• Enable jobs (yarn enable-jobs), set up different user/admin combinations
• As the user, run some jobs
• Check that everyone can see exactly those jobs they are supposed to see
• Also check export download links (for this you need a webknossos-worker. I did test it, though, and this uses the same access check as the simple GET api/jobs/:id, which can be tested without a worker)

Issues:

• fixes Allow admins to download exported files from all jobs of orga #7447

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• Updated changelog