Improve check follow params tests

server/middlewares/oauth.ts

server/middlewares/user-right.ts

server/middlewares/validators/follows.ts

server/tests/api/check-params/follows.ts

server/tests/api/check-params/jobs.ts

server/tests/api/check-params/users.ts

server/tests/api/check-params/video-abuses.ts

server/tests/api/check-params/video-blacklist.ts

server/tests/api/check-params/video-channels.ts

server/tests/api/check-params/videos.ts

server/tests/api/server/follows.ts

server/tests/api/users/users.ts

server/tests/api/videos/multiple-servers.ts

server/tests/api/videos/video-privacy.ts

server/tests/client.ts

server/tests/real-world/tools/get-access-token.ts

server/tests/utils/requests/check-api-params.ts

server/tests/utils/requests/requests.ts

server/tests/utils/server/servers.ts

server/tests/utils/users/login.ts