[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/javaProperties/OnlyPublic.fir.kt

@@ -5,9 +5,9 @@ import JavaClass
 
 fun foo(javaClass: JavaClass) {
     javaClass.somethingPublic
-    javaClass.<!INAPPLICABLE_CANDIDATE!>somethingProtected<!>
-    javaClass.<!INAPPLICABLE_CANDIDATE!>somethingPrivate<!>
-    javaClass.<!INAPPLICABLE_CANDIDATE!>somethingPackage<!>
+    javaClass.<!HIDDEN!>somethingProtected<!>
+    javaClass.<!HIDDEN!>somethingPrivate<!>
+    javaClass.<!HIDDEN!>somethingPackage<!>
     javaClass.somethingPublic = 1
 }
 
@@ -19,4 +19,4 @@ public class JavaClass {
     int getSomethingPackage() { return 1; }
 
     protected void setSomethingPublic(int value) {}
-}
+}