Enforce maximum attachment size in project API uploads by default
This makes the feature flag enforce_max_attachment_size_upload_api
enabled by default. Previously all uploads via the project API could
bypass the maximum attachment size limit. Now, Workhorse will cut off
the transfer with a "413 Request entity too large" message when that
limit is hit.
This has been enabled on GitLab.com with an exception list since GitLab 13.11.
Relates to #325787 (closed)
Edited by Stan Hu