Add PrivateInFileEffectiveVisibility language feature (1.6)

compiler/testData/diagnostics/tests/exposed/privateInFile.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +PrivateInFileEffectiveVisibility
+
 class Public {
     private open class NestedPrivate
 
@@ -11,17 +13,17 @@ class Public {
 private class PrivateInFileClass {
     private open class NestedPrivate
 
-    fun <!EXPOSED_FROM_PRIVATE_IN_FILE!>test1<!>() = NestedPrivate()
-    fun test2(<!EXPOSED_FROM_PRIVATE_IN_FILE!>p: NestedPrivate<!>) {}
-    fun <!EXPOSED_FROM_PRIVATE_IN_FILE!>NestedPrivate<!>.test3() {}
-    val <!EXPOSED_FROM_PRIVATE_IN_FILE!>test4<!> = NestedPrivate()
-    class Test5 : <!EXPOSED_FROM_PRIVATE_IN_FILE!>NestedPrivate()<!>
+    fun <!EXPOSED_FUNCTION_RETURN_TYPE!>test1<!>() = NestedPrivate()
+    fun test2(<!EXPOSED_PARAMETER_TYPE!>p: NestedPrivate<!>) {}
+    fun <!EXPOSED_RECEIVER_TYPE!>NestedPrivate<!>.test3() {}
+    val <!EXPOSED_PROPERTY_TYPE!>test4<!> = NestedPrivate()
+    class Test5 : <!EXPOSED_SUPER_CLASS!>NestedPrivate()<!>
 }
 
 private interface PrivateInFile {
     private class Private
 
-    fun <!EXPOSED_FROM_PRIVATE_IN_FILE!>expose<!>() = Private()
+    fun <!EXPOSED_FUNCTION_RETURN_TYPE!>expose<!>() = Private()
 }
 
 // Exposes 'PrivateInFile$Private' via 'expose'