Shift ReferencesToSyntheticJavaProperties feature release from 1.9 to 2.1

Other related tests:
- testGenericJavaProperty
- testFunInterfaceConstructorReference

Meta issue: KT-8575
Review: https://jetbrains.team/p/kt/reviews/9595

UnsupportedSyntheticCallableReferenceChecker only existed for K1,
because we wanted to release the feature for 1.9 and the feature should
have been working for K2 unconditionally. But since, we're postponing
the release until 2.1, we also need to port the checker from K1 to K2

compiler/testData/diagnostics/tests/callableReference/unsupported/syntheticProperties.fir.kt

@@ -1,21 +0,0 @@
-// !LANGUAGE: -ReferencesToSyntheticJavaProperties
-
-// FILE: Customer.java
-public class Customer {
-    private String name;
-
-    public Customer(String name) {
-        this.name = name;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-}
-
-// FILE: test.kt
-val customerName = Customer::name

compiler/testData/diagnostics/tests/callableReference/unsupported/syntheticProperties.kt

@@ -1,4 +1,5 @@
 // !LANGUAGE: -ReferencesToSyntheticJavaProperties
+// FIR_IDENTICAL
 
 // FILE: Customer.java
 public class Customer {