Fix N+1, update test

Author: jamiebenstead

app/controllers/api/lessons_controller.rb

@@ -92,7 +92,7 @@ def user_remixes(lessons)
 
     def user_remix(lesson)
       lesson.project&.remixes
-            &.includes(school_project: :feedback)
+            &.includes(:school_project)
             &.where(user_id: current_user.id)
             &.accessible_by(current_ability)
             &.order(created_at: :asc)

spec/features/lesson/listing_lessons_spec.rb

@@ -233,7 +233,7 @@
       student = create(:student, school:)
       authenticated_in_hydra_as(student)
       create(:class_student, school_class:, student_id: student.id)
-      student_project = create(:project, school:, lesson:, parent: lesson.project, user_id: student.id)
+      student_project = create(:project, school:, lesson:, parent: lesson.project, remixed_from_id: lesson.project.id, user_id: student.id)
 
       get('/api/lessons', headers:)
       data = JSON.parse(response.body, symbolize_names: true)
@@ -273,7 +273,6 @@
       )
       school_project = student_project.school_project
 
-      # 1 unread feedback
       create(
         :feedback,
         school_project: school_project,
@@ -282,7 +281,6 @@
         read_at: nil
       )
 
-      # 1 read feedback
       create(
         :feedback,
         school_project: school_project,