Update test data for tower resolution algorithm

- locals win
- unary calls to plus/minus are not supported in favor of unaryPlus/unaryMinus
- unqualified nested classes are temporarily reported as unresolved
- function without receiver win against extension function
- explicit import win against star import

compiler/testData/diagnostics/tests/modifiers/operatorInfix/Simple.kt

@@ -24,7 +24,7 @@ operator fun Example.inc() = Example2()
 
 infix fun Example.plus(o: Example) = ""
 
-fun a() {
+fun test() {
     var a = Example()
     val b = Example()