FIR: Fix positioning of ENUM_ENTRY_AS_TYPE

The current SELECTOR_BY_QUALIFIED positioning strategy is closely
related what should be done here. But it only works on qualified access
expressions. This change also makes it work for type references.

compiler/testData/diagnostics/tests/enum/inheritFromEnumEntry.fir.kt

@@ -1,5 +0,0 @@
-enum class E {
-    ENTRY
-}
-
-class A : <!ENUM_ENTRY_AS_TYPE!>E.ENTRY<!>

compiler/testData/diagnostics/tests/enum/inheritFromEnumEntry.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 enum class E {
     ENTRY
 }