fix(answerView): programming answer shown as too big when empty

Author: bivanalhar

client/app/bundles/course/assessment/pages/AssessmentStatistics/AnswerDetails/ProgrammingComponent/FileContent.tsx

@@ -25,7 +25,7 @@ const FileContent: FC<Props> = (props) => {
   const { answerId, annotations, file } = props;
   const fileAnnotation = annotations.find((a) => a.fileId === file.id);
 
-  return file.highlightedContent ? (
+  return file.highlightedContent !== null ? (
     <ReadOnlyEditor
       annotations={fileAnnotation?.topics ?? ([] as AnnotationTopic[])}
       answerId={answerId}

client/app/bundles/course/assessment/submission/containers/ReadOnlyEditor.jsx

@@ -24,7 +24,7 @@ class ReadOnlyEditorContainer extends Component {
   render() {
     const { answerId, file, annotations } = this.props;
 
-    if (file.highlightedContent) {
+    if (file.highlightedContent !== null) {
       return (
         <ReadOnlyEditorComponent
           annotations={Object.values(annotations)}