JVM KT-49548 progression iterators can be tainted

compiler/testData/codegen/box/boxingOptimization/unsignedArrayForEach.kt

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+import kotlin.test.assertEquals
+
+fun test() {
+    var i = 0
+    val a = ubyteArrayOf(3u, 2u, 1u)
+    a.forEach { e -> assertEquals(e, a[i++]) }
+}
+
+fun box(): String {
+    test()
+    return "OK"
+}