Fix running stdlib tests in worker on Native

Add `@SharedImmutable` or `@ThreadLocal` where required.

libraries/stdlib/test/OrderingTest.kt

@@ -5,6 +5,7 @@
 
 package test.comparisons
 
+import kotlin.native.concurrent.SharedImmutable
 import kotlin.test.*
 
 data class Item(val name: String, val rating: Int) : Comparable<Item> {
@@ -13,6 +14,7 @@ data class Item(val name: String, val rating: Int) : Comparable<Item> {
     }
 }
 
+@SharedImmutable
 val STRING_CASE_INSENSITIVE_ORDER: Comparator<String> =
     compareBy { it: String -> it.toUpperCase() }.thenBy { it.toLowerCase() }.thenBy { it }