[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/syntheticExtensions/samAdapters/overloadResolutionStatic.fir.kt

@@ -32,5 +32,5 @@ fun x(r: Runnable) {
     A.bar(null as CharSequence?) checkType { _<String>() }
 
     A.bar("") checkType { _<String>() }
-    A.<!INAPPLICABLE_CANDIDATE!>bar<!>(123)
+    A.<!NONE_APPLICABLE!>bar<!>(123)
 }