refactor(client): have a single place to edit sounds url (#66381)

client/src/templates/Challenges/components/multiple-choice-questions.tsx

@@ -12,6 +12,7 @@ import SpeakingModal from './speaking-modal';
 import ChallengeHeading from './challenge-heading';
 import PrismFormatted from './prism-formatted';
 import { stripHtmlTags } from './speaking-modal-helpers';
+import { sounds } from './scene/scene-assets';
 
 type MultipleChoiceQuestionsProps = {
   questions: Question[];
@@ -54,9 +55,7 @@ function MultipleChoiceQuestions({
   };
 
   const constructAudioUrl = (audioId?: string): string | undefined =>
-    audioId
-      ? `https://cdn.freecodecamp.org/curriculum/english/animation-assets/sounds/${audioId}`
-      : undefined;
+    audioId ? `${sounds}/${audioId}` : undefined;
 
   const getAudioUrl = (
     questionIndex: number,

client/src/templates/Challenges/quiz/show.tsx

@@ -37,6 +37,7 @@ import {
 import { isChallengeCompletedSelector } from '../redux/selectors';
 import PrismFormatted from '../components/prism-formatted';
 import { usePageLeave } from '../hooks';
+import { sounds } from '../components/scene/scene-assets';
 import ExitQuizModal from './exit-quiz-modal';
 import FinishQuizModal from './finish-quiz-modal';
 
@@ -170,7 +171,7 @@ const ShowQuiz = ({
 
       const audioData = question.audioData?.audio?.filename
         ? {
-            audioUrl: `https://cdn.freecodecamp.org/curriculum/english/animation-assets/sounds/${question.audioData.audio.filename}`,
+            audioUrl: `${sounds}/${question.audioData.audio.filename}`,
             audioStartTime:
               question.audioData.audio.startTimestamp ?? undefined,
             audioFinishTime: