[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/fir/analysis-tests/testData/resolve/visibility/singletonConstructors.kt

@@ -2,12 +2,12 @@ class A {
     companion object Comp {}
 
     fun foo() {
-        <!INAPPLICABLE_CANDIDATE!>Comp<!>()
+        <!HIDDEN!>Comp<!>()
     }
 }
 
 object B {
-    private val x = <!INAPPLICABLE_CANDIDATE!>B<!>()
+    private val x = <!HIDDEN!>B<!>()
 }
 
 class D {

compiler/fir/analysis-tests/testData/resolve/visibility/singletonConstructors.txt

@@ -12,7 +12,7 @@ FILE: singletonConstructors.kt
         }
 
         public final fun foo(): R|kotlin/Unit| {
-            <Inapplicable(HIDDEN): [/A.Comp.Comp]>#()
+            <HIDDEN: /A.Comp.Comp is invisible>#()
         }
 
     }
@@ -21,8 +21,8 @@ FILE: singletonConstructors.kt
             super<R|kotlin/Any|>()
         }
 
-        private final val x: <ERROR TYPE REF: Inapplicable(HIDDEN): [/B.B]> = <Inapplicable(HIDDEN): [/B.B]>#()
-            private get(): <ERROR TYPE REF: Inapplicable(HIDDEN): [/B.B]>
+        private final val x: R|B| = <HIDDEN: /B.B is invisible>#()
+            private get(): R|B|
 
     }
     public final class D : R|kotlin/Any| {