Code clean, small refactorings and tests

#KT-8987 Fixed

compiler/testData/codegen/box/argumentOrder/defaults.kt

@@ -0,0 +1,13 @@
+var invokeOrder: String = ""
+
+fun test(x: Double = { invokeOrder += "x"; 1.0 }(), a: String, y: Long = { invokeOrder += "y"; 1 }(), b: String): String {
+    return "" + x + a + b + y;
+}
+
+fun box(): String {
+    val funResult = test(b = { invokeOrder += "K"; "K" }(), a = { invokeOrder += "O"; "O" }())
+
+    if (invokeOrder != "KOxy" || funResult != "1.0OK1") return "fail: $invokeOrder != KOxy or $funResult != 1.0OK1"
+
+    return "OK"
+}