Extract diagnostics about references to variables to a separate one

Note that I've left in FIR everything as is to avoid non-trivial
refactoring that is required right now to report more specific diagnostics

 ^KT-59152

compiler/testData/diagnostics/tests/callableReference/property/backingField.kt

@@ -1,8 +1,7 @@
-// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 
 val i: Int = 10
     get() {
-        ::<!UNSUPPORTED!>field<!>
+        ::<!UNSUPPORTED_REFERENCES_TO_VARIABLES_AND_PARAMETERS!>field<!>
         return field
     }