[FIR] Improve diagnostic reporting & don't use error symbol for candidate if possible

Also introduce few new diagnostics:
- NONE_APPLICABLE more many inapplicable candidates
- HIDDEN for visible candidates

compiler/testData/diagnostics/tests/callableReference/function/extensionToSupertype.fir.kt

@@ -1,19 +0,0 @@
-// !WITH_NEW_INFERENCE
-// !CHECK_TYPE
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-import kotlin.reflect.*
-
-interface A
-interface B : A
-
-fun A.foo() {}
-
-fun take(f: (A) -> Unit) {}
-fun take(f: () -> Unit) {}
-
-fun test() {
-    B::foo checkType { _<KFunction1<B, Unit>>() }
-
-    <!INAPPLICABLE_CANDIDATE!>take<!>(B::foo)
-}

compiler/testData/diagnostics/tests/callableReference/function/extensionToSupertype.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !WITH_NEW_INFERENCE
 // !CHECK_TYPE
 // !DIAGNOSTICS: -UNUSED_PARAMETER

compiler/testData/diagnostics/tests/callableReference/function/noAmbiguityMemberVsTopLevel.fir.kt

@@ -25,7 +25,7 @@ class A {
 
         expectFunction0Unit(::foo)
         expectFunction0String(::foo)
-        <!INAPPLICABLE_CANDIDATE!>expectFunction1Unit<!>(::foo)
-        <!INAPPLICABLE_CANDIDATE!>expectFunction1String<!>(::foo)
+        <!INAPPLICABLE_CANDIDATE!>expectFunction1Unit<!>(<!UNRESOLVED_REFERENCE!>::foo<!>)
+        <!INAPPLICABLE_CANDIDATE!>expectFunction1String<!>(<!UNRESOLVED_REFERENCE!>::foo<!>)
     }
 }