folios.uploads/event_files/<file name>: a file with the same name as an existing one overwrites its content for every event that uses it.curl --location --request PATCH 'https://qa-api.kiolinkapp.com/v1/files/event-files/65f1c2a9e4b0a1b2c3d4e7e1/?folios=KL-2026-000123' \
--header 'authorization: <api-key>' \
--form 'file=@"plano-rack.pdf"'{
"acknowledged": true,
"modifiedCount": 1,
"upsertedId": null,
"upsertedCount": 0,
"matchedCount": 1
}