FIR2IR fix enum special methods generation

compiler/testData/codegen/box/enum/javaEnumValues2.kt

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: JVM
+// FILE: E.java
+public enum E {
+    A();
+    public static String values(String s) {
+        return s;
+    }
+}
+
+// FILE: test.kt
+
+fun f(e: E) = when (e) {
+    E.A -> E.values("OK")
+}
+
+fun box(): String {
+    return f(E.A)
+}