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

idea/testData/diagnosticMessage/nestedClassAcessedViaInstanceReference.kt

@@ -1,4 +1,4 @@
-// !DIAGNOSTICS_NUMBER: 4
+// !DIAGNOSTICS_NUMBER: 3
 // !DIAGNOSTICS: NESTED_CLASS_ACCESSED_VIA_INSTANCE_REFERENCE
 
 class A {
@@ -9,8 +9,8 @@ class A {
 }
 
 fun test(a: A) {
-    a.Nested()
     a.NestedWithClassObject
     a.NestedEnum
     a.NestedObj
-}
+    a.Nested() // TODO: report "nested class accessed via instance reference" here as well
+}