[JS IR] stdlib: Use comparator in CharArray.sort

CharArray is represented as a regular JS Array. Its default sort order is based
on string representation of elements.

libraries/stdlib/js-ir/src/generated/_ArraysJs.kt

@@ -1303,7 +1303,7 @@ public actual fun FloatArray.sort(): Unit {
  * Sorts the array in-place.
  */
 public actual fun CharArray.sort(): Unit {
-    this.asDynamic().sort()
+    this.asDynamic().sort(::primitiveCompareTo)
 }
 
 /**