Extract Superclass: Fix visibility lifting when moving to interface

#KT-16281 Fixed

idea/testData/refactoring/extractInterface/liftInternal.kt

@@ -0,0 +1,8 @@
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    internal var internalVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    internal fun internalFun() {}
+}

idea/testData/refactoring/extractInterface/liftInternal.kt.after

@@ -0,0 +1,16 @@
+interface IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    var internalVar: Int
+
+    // INFO: {checked: "true", toAbstract: "true"}
+    fun internalFun()
+}
+
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate : IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    override var internalVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    override fun internalFun() {}
+}

idea/testData/refactoring/extractInterface/liftPrivate.kt

@@ -0,0 +1,8 @@
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    private var privateVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    private fun privateFun() {}
+}

idea/testData/refactoring/extractInterface/liftPrivate.kt.after

@@ -0,0 +1,16 @@
+interface IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    var privateVar: Int
+
+    // INFO: {checked: "true", toAbstract: "true"}
+    fun privateFun()
+}
+
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate : IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    override var privateVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    override fun privateFun() {}
+}

idea/testData/refactoring/extractInterface/liftProtected.kt

@@ -0,0 +1,8 @@
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    protected var protectedVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    protected fun protectedFun() {}
+}

idea/testData/refactoring/extractInterface/liftProtected.kt.after

@@ -0,0 +1,16 @@
+interface IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    var protectedVar: Int
+
+    // INFO: {checked: "true", toAbstract: "true"}
+    fun protectedFun()
+}
+
+// NAME: IPurePrivate
+// SIBLING:
+class PurePrivate : IPurePrivate {
+    // INFO: {checked: "true", toAbstract: "true"}
+    override var protectedVar = 0
+    // INFO: {checked: "true", toAbstract: "true"}
+    override fun protectedFun() {}
+}