Refactoring & clarification: implement new FIR tower resolver

compiler/testData/diagnostics/testsWithStdLib/CallCompanionProtectedNonStatic.fir.kt

@@ -5,7 +5,7 @@ open class VeryBase {
 open class Base {
     protected fun foo() { 
         bar() // Ok
-        <!INAPPLICABLE_CANDIDATE!>baz<!>() // Ok
+        baz() // Ok
     }
 
     inner class Inner {
@@ -13,7 +13,7 @@ open class Base {
             foo() // Ok
             bar() // Ok
             gav() // Ok
-            <!INAPPLICABLE_CANDIDATE!>baz<!>() // Ok
+            baz() // Ok
         }
     }
 
@@ -22,7 +22,7 @@ open class Base {
             foo() // Ok
             bar() // Ok
             gav() // Ok
-            <!INAPPLICABLE_CANDIDATE!>baz<!>() // Ok
+            baz() // Ok
         }
     }
     

compiler/testData/diagnostics/testsWithStdLib/javaClassOnCompanion.fir.kt

@@ -21,7 +21,7 @@ val a5 = A.Companion::class.java
 val o0 = O.javaClass
 val o1 = O::class.java
 
-val e0 = E.javaClass
+val e0 = E.<!UNRESOLVED_REFERENCE!>javaClass<!>
 val e1 = E::class.java
 val e2 = E.ENTRY.javaClass