JVM_IR KT-47492 fix 'for' loop generation

compiler/testData/codegen/box/ranges/kt47492.kt

@@ -0,0 +1,11 @@
+// DONT_TARGET_EXACT_BACKEND: WASM
+// WITH_RUNTIME
+
+fun p() {}
+
+fun box(): String {
+    var sum = 1
+    for (i: Int? in sum downTo sum.toULong().countTrailingZeroBits())
+        p()
+    return "OK"
+}