[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)
 }
 
 /**

libraries/tools/kotlin-stdlib-gen/src/templates/Arrays.kt

@@ -1038,7 +1038,13 @@ object ArrayOps : TemplateGroupBase() {
                             body { "definedExternally" }
                         }
                         on(Backend.IR) {
-                            body { "this.asDynamic().sort()" }
+                            if (primitive == PrimitiveType.Char) {
+                                // Requires comparator because default comparator of 'Array.prototype.sort' compares
+                                // string representation of values
+                                body { "this.asDynamic().sort(::primitiveCompareTo)" }
+                            } else {
+                                body { "this.asDynamic().sort()" }
+                            }
                         }
                     } else {
                         body {