Unify MutableList.reverse function template between JVM and JS

js/js.libraries/src/core/generated/_CollectionsJs.kt

@@ -780,6 +780,21 @@ public inline fun <T> Iterable<T>.takeWhile(predicate: (T) -> Boolean): List<T>
     return list
 }
 
+/**
+ * Reverses elements in the list in-place.
+ */
+public fun <T> MutableList<T>.reverse(): Unit {
+    val midPoint = (size / 2) - 1
+    if (midPoint < 0) return
+    var reverseIndex = lastIndex
+    for (index in 0..midPoint) {
+        val tmp = this[index]
+        this[index] = this[reverseIndex]
+        this[reverseIndex] = tmp
+        reverseIndex--
+    }
+}
+
 /**
  * Returns a list with elements in reversed order.
  */