Mobilizon.Actors.check_follow

Called by:

• Mobilizon.GraphQL.API.Follows.accept (L44)
• Mobilizon.GraphQL.API.Follows.reject (L71)
• Mobilizon.GraphQL.Resolvers.Admin.follow_status (L686)
• Mobilizon.Actors.follow (L1284)
• Mobilizon.Actors.unfollow (L1313)