JVM_IR KT-44744 check accessibility of enum entry 'this'

compiler/testData/codegen/box/enum/kt44744.kt

@@ -0,0 +1,22 @@
+enum class ContentType {
+
+    PLAIN_TEXT {
+        override fun convert(text: String, targetType: ContentType): String {
+            return text
+        }
+    },
+
+    MARKDOWN {
+        override fun convert(text: String, targetType: ContentType): String {
+            return when (targetType) {
+                MARKDOWN -> text
+                PLAIN_TEXT -> ""
+            }
+        }
+    };
+
+    abstract fun convert(text: String, targetType: ContentType): String
+}
+
+fun box() =
+    ContentType.PLAIN_TEXT.convert("OK", ContentType.PLAIN_TEXT)

compiler/testData/codegen/box/enum/kt44744_innerClass.kt

@@ -0,0 +1,27 @@
+interface IFoo {
+    fun foo(e: En): String
+}
+
+enum class En {
+    TEST {
+        inner class Nested : IFoo {
+            private val ee = TEST
+
+            override fun foo(e: En): String {
+                return if (e == ee) e.ok else "Failed"
+            }
+        }
+
+        override val ok: String get() = "OK"
+        override fun foo(): IFoo = Nested()
+    },
+    OTHER {
+        override val ok: String get() = throw AssertionError()
+        override fun foo(): IFoo = throw AssertionError()
+    };
+
+    abstract val ok: String
+    abstract fun foo(): IFoo
+}
+
+fun box() = En.TEST.foo().foo(En.TEST)