don't check quota for quiz file upload questions

test plan:
* try to upload a file greater than 50MB for a quiz
 file upload question submission
* it should be successful

closes #CNVS-27148

Change-Id: Id92ac58a31d0ab38b311fc5227dbd139bb1e35ad
Reviewed-on: https://gerrit.instructure.com/73050
Tested-by: Jenkins
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: Jahnavi Yetukuri <jyetukuri@instructure.com>
Product-Review: James Williams  <jamesw@instructure.com>

app/controllers/quizzes/quiz_submission_files_controller.rb

@@ -64,8 +64,7 @@ class Quizzes::QuizSubmissionFilesController < ApplicationController
     raise ActiveRecord::RecordNotFound unless quiz_submission
 
     if authorized_action(quiz, @current_user, :submit)
-      json =  api_attachment_preflight_json quiz_submission, request,
-                :check_quota => true, :file_param => 'file'
+      json =  api_attachment_preflight_json quiz_submission, request, :file_param => 'file'
 
       render :json => json
     end

spec/apis/v1/quizzes/quiz_submission_files_spec.rb

@@ -49,7 +49,7 @@ describe Quizzes::QuizSubmissionFilesController, type: :request do
     end
 
     def has_query_exemption?
-      false
+      true
     end
   end
 

spec/selenium/quizzes/quizzes_teacher_spec.rb

@@ -584,6 +584,9 @@ describe "quizzes" do
       q.generate_quiz_data
       q.save!
       _filename, @fullpath, _data = get_file "testfile1.txt"
+
+      Setting.set('context_default_quota', '1') # shouldn't check quota
+
       user_session(@student)
       get "/courses/#{@course.id}/quizzes/#{q.id}/take"
       expect_new_page_load do