Use current_locale for "not_graded" hint

app/controllers/concerns/submission_scoring.rb

@@ -4,9 +4,11 @@ require 'concurrent/future'
 
 module SubmissionScoring
   def collect_test_results(submission)
+    current_locale = I18n.locale
     # Mnemosyne.trace 'custom.codeocean.collect_test_results', meta: { submission: submission.id } do
     futures = submission.collect_files.select(&:teacher_defined_assessment?).map do |file|
       Concurrent::Future.execute do
+        I18n.with_locale(current_locale) do
           # Mnemosyne.trace 'custom.codeocean.collect_test_results_block', meta: { file: file.id, submission: submission.id } do
           assessor = Assessor.new(execution_environment: submission.execution_environment)
           output = execute_test_file(file, submission)
@@ -46,6 +48,7 @@ module SubmissionScoring
           # end
         end
       end
+    end
     futures.map(&:value)
   end
 

app/controllers/submissions_controller.rb

@@ -366,13 +366,16 @@ class SubmissionsController < ApplicationController
 
       # the score_submission call will end up calling docker exec, which is blocking.
       # to ensure responsiveness, we therefore open a thread here.
+      current_locale = I18n.locale
       Thread.new do
+        I18n.with_locale(current_locale) do
           tubesock.send_data JSON.dump(score_submission(@submission))
 
           # To enable hints when scoring a submission, uncomment the next line:
           # send_hints(tubesock, StructuredError.where(submission: @submission))
 
           tubesock.send_data JSON.dump({'cmd' => 'exit'})
+        end
       ensure
         ActiveRecord::Base.connection_pool.release_connection
       end