Locale-agnostic case conversions by default #KT-43023

libraries/stdlib/test/collections/SequenceTest.kt

@@ -718,7 +718,7 @@ public class SequenceTest {
         assertEquals(mapOf("Alice" to 5, "Bob" to 3, "Carol" to 5), itemsWithTheirLength)
 
         val updatedLength =
-            items.drop(1).associateWithTo(itemsWithTheirLength.toMutableMap()) { name -> name.toLowerCase().count { it in "aeuio" }}
+            items.drop(1).associateWithTo(itemsWithTheirLength.toMutableMap()) { name -> name.lowercase().count { it in "aeuio" }}
 
         assertEquals(mapOf("Alice" to 5, "Bob" to 1, "Carol" to 2), updatedLength)
     }