Adding a new line to MathTokenizer to test affected files list

The previous compute affected tests acquired all files

- 591 total
- 547 Bazel targets

utility/src/main/java/org/oppia/android/util/math/MathTokenizer.kt

@@ -439,3 +439,4 @@ class MathTokenizer private constructor() {
     }
   }
 }
+