Init enum entries whenever we access companion object or accessing valueOf

Fixes https://youtrack.jetbrains.com/issue/KT-43987
Fixes https://youtrack.jetbrains.com/issue/KT-43989

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

@@ -0,0 +1,19 @@
+// IGNORE_BACKEND: JS
+
+var l = ""
+enum class Foo {
+    F;
+    init {
+        l += "Foo;"
+    }
+    object L {
+        init {
+            l += "Foo.CO;"
+        }
+    }
+}
+
+fun box(): String {
+    Foo.L
+    return if (l != "Foo.CO;") "FAIL: ${l}" else "OK"
+}