Faraday::ServerError: the server responded with status 500 (erroneous failing call to profile by a student to list students)

[sentry-io]

We are seeing a large number of these errors in Sentry, nearly 1k a day on busier days.

This looks to be happening when a student opens a project, which calls the show action in projects_controller, which in turn calls the @project.with_user call, which then calls SchoolStudent::List which will fail as students aren't allowed to list students. We should put a guard on this to prevent it happening when the current user is a student.

This error isn't being surfaced to the user, but is causing a lot of noise in Sentry and pointless requests, we've seen 14k since it was introduced and that has ramped up a lot recently with our increased traffic.

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Sentry Issue: EDITOR-API-4X

Faraday::ServerError: the server responded with status 500 for POST https://my.raspberrypi.org/api/v1/schools/ecaca07f-6d9f-4d0a-9d70-4e0e73ddf6be/students/list (Faraday::ServerError)
  lib/profile_api_client.rb:69:in `list_school_students'
    response = connection(token).post("/api/v1/schools/#{school_id}/students/list") do |request|
  lib/concepts/school_student/list.rb:20:in `list_students'
    ProfileApiClient.list_school_students(token:, school_id: school.id, student_ids:).map do |student|
  lib/concepts/school_student/list.rb:8:in `call'
    response[:school_students] = list_students(school, token, student_ids)
  app/models/project.rb:57:in `with_user'
    students = SchoolStudent::List.call(school:, token: current_user.token,
  app/controllers/api/projects_controller.rb:21:in `show'
    project_with_user = @project.with_user(current_user)
...
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[sentry-io]

Sentry Issue: PROFILE-PRODUCTION-GT