[JS IR] Not cast to declaration parent in JsCodeOutlineLowering, use parent otherwise

^KT-45057 fixed

js/js.translator/testData/box/jsCode/init.kt

@@ -0,0 +1,21 @@
+// EXPECTED_REACHABLE_NODES: 1282
+package foo
+
+class A {
+    var ok: String
+
+    init {
+        var ok = "fail"
+        ok = js(
+            """
+            ok = 'OK'
+            return ok
+            """
+        )
+        this.ok = ok
+    }
+}
+
+fun box(): String {
+    return A().ok
+}