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/callableReference/function/nestedConstructorFromExtension.kt

@@ -7,7 +7,7 @@ class A {
 }
     
 fun A.main() {
-    ::<!NESTED_CLASS_SHOULD_BE_QUALIFIED!>Nested<!>
+    ::<!UNRESOLVED_REFERENCE!>Nested<!>
     val y = A::Nested
     
     checkSubtype<KFunction0<A.Nested>>(y)