FIR: use override checker when populating directOverriddenProperties

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

@@ -1,11 +0,0 @@
-enum class E {
-    ENTRY;
-
-    override val name: String = "lol"
-    override val ordinal: Int = 0
-
-    <!OVERRIDING_FINAL_MEMBER!>override<!> fun compareTo(other: E) = -1
-
-    <!OVERRIDING_FINAL_MEMBER!>override<!> fun equals(other: Any?) = true
-    <!OVERRIDING_FINAL_MEMBER!>override<!> fun hashCode() = -1
-}

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

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