Add WITH_RUNTIME or WITH_REFLECT to boxWithStdlib testData

compiler/testData/codegen/boxWithStdlib/when/switchOptimizationStatement.kt

@@ -1,3 +1,5 @@
+// WITH_RUNTIME
+
 fun exhaustive(x: Int): Int {
     var r: Int
     when (x) {
@@ -31,4 +33,3 @@ fun box(): String {
     if (result != "4, 1, 2, 3") return "non-exhaustive:" + result
     return "OK"
 }
-