Do not mangle internal @PublishedApi functions

compiler/testData/codegen/box/publishedApi/noMangling.kt

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JS
+//WITH_REFLECT
+class A {
+    @PublishedApi
+    internal fun published() = "OK"
+
+    inline fun test() = published()
+
+}
+
+fun box() : String {
+    val clazz = A::class.java
+    if (clazz.getDeclaredMethod("published") == null) return "fail"
+    return "OK"
+}

compiler/testData/codegen/box/publishedApi/simple.kt

@@ -0,0 +1,12 @@
+class A {
+
+    @PublishedApi
+    internal fun published() = "OK"
+
+    inline fun test() = published()
+
+}
+
+fun box() : String {
+    return A().test()
+}