[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/controlFlowAnalysis/unnecessaryLateinit/lateinitWithErroneousDelegation.fir.kt

@@ -7,5 +7,5 @@ class Foo {
         x = "Foo"
     }
 
-    constructor(x: String, y: String): <!INAPPLICABLE_CANDIDATE!>this<!>(y.hashCode())
-}
+    constructor(x: String, y: String): <!NONE_APPLICABLE!>this<!>(y.hashCode())
+}