[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/resolve/noCandidates/resolvedToClassifier.fir.kt

@@ -9,11 +9,11 @@ fun test() {
     val interface_as_fun = <!UNRESOLVED_REFERENCE!>A<!>()
     val interface_as_val = A
 
-    val object_as_fun = <!INAPPLICABLE_CANDIDATE!>B<!>()
+    val object_as_fun = <!HIDDEN!>B<!>()
     val class_as_val = C
 }
 
 fun <T> bar() {
     val typeParameter_as_val = <!OTHER_ERROR, OTHER_ERROR!>T<!>
     val typeParameter_as_fun = <!UNRESOLVED_REFERENCE!>T<!>()
-}
+}

compiler/testData/diagnostics/tests/resolve/noCandidates/resolvedToClassifierWithReceiver.fir.kt

@@ -11,7 +11,7 @@ fun testX() {
     val interface_as_fun = X.<!UNRESOLVED_REFERENCE!>A<!>()
     val interface_as_val = X.A
 
-    val object_as_fun = X.<!INAPPLICABLE_CANDIDATE!>B<!>()
+    val object_as_fun = X.<!HIDDEN!>B<!>()
     val class_as_val = X.C
 }
 
@@ -26,7 +26,7 @@ fun testY() {
     val interface_as_fun = Y.<!UNRESOLVED_REFERENCE!>A<!>()
     val interface_as_val = Y.A
 
-    val object_as_fun = Y.<!INAPPLICABLE_CANDIDATE!>B<!>()
+    val object_as_fun = Y.<!HIDDEN!>B<!>()
     val class_as_val = Y.C
 }
 
@@ -36,4 +36,4 @@ fun test(x: X) {
 
     val object_as_fun = x.<!UNRESOLVED_REFERENCE!>B<!>()
     val class_as_val = x.C
-}
+}