Fir2Ir: do not skip building static fake overrides for enums

Fake overrides are needed at least for static fields inherited from Java
interfaces. Not static methods though, because they are not inherited.

 #KT-57302 Fixed

compiler/testData/codegen/box/statics/enumWithInheritedStaticField.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM
+// IGNORE_LIGHT_ANALYSIS
+// FILE: E.java
+
+interface I {
+    String result = "OK";
+}
+
+public enum E implements I {}
+
+// FILE: box.kt
+
+fun box(): String = E.result