FIR checker: fix REFERENCE_BY_QUALIFIED positioning strategy to consider callable reference

compiler/testData/diagnostics/tests/callableReference/property/kt7945_unrelatedClass.fir.kt

@@ -7,5 +7,5 @@ class TestClass(var prop: Int)
 open class OtherClass
 fun OtherClass.test(prop: KProperty1<TestClass, Int>): Unit = throw Exception()
 class OtherClass2: OtherClass() {
-    val result = <!INAPPLICABLE_CANDIDATE!>test<!>(<!UNRESOLVED_REFERENCE!>TestClass::result<!>)
+    val result = <!INAPPLICABLE_CANDIDATE!>test<!>(TestClass::<!UNRESOLVED_REFERENCE!>result<!>)
 }