Temporary add jvm.overloads annotation for generated joinToString() method.

Stdlib generator: allow to specify arbitrary annotations for all or some of generic function expansions.

libraries/stdlib/src/generated/_Strings.kt

@@ -338,6 +338,7 @@ public fun ShortArray.joinToString(separator: String = ", ", prefix: String = ""
  * If the collection could be huge, you can specify a non-negative value of [limit], in which case only the first [limit]
  * elements will be appended, followed by the [truncated] string (which defaults to "...").
  */
+kotlin.jvm.overloads
 public fun <T> Iterable<T>.joinToString(separator: String = ", ", prefix: String = "", postfix: String = "", limit: Int = -1, truncated: String = "...", transform: ((T) -> String)? = null): String {
     return joinTo(StringBuilder(), separator, prefix, postfix, limit, truncated, transform).toString()
 }