KT-6815 Representing raw types when used as supertypes for Java classes

#KT-6815 Fixed

compiler/testData/diagnostics/tests/j+k/overrideRawType.kt

@@ -9,7 +9,7 @@ public interface Bar {
 
 //FILE: a.kt
 class BarImpl: Bar {
-    override fun f(f: Foo<out CharSequence?>?) {
+    override fun f(f: Foo<*>?) {
         throw UnsupportedOperationException()
     }
 }

compiler/testData/diagnostics/tests/j+k/overrideRawType.txt

@@ -12,7 +12,7 @@ public trait Bar {
 internal final class BarImpl : Bar {
     public constructor BarImpl()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open override /*1*/ fun f(/*0*/ f: Foo<out kotlin.CharSequence?>?): kotlin.Unit
+    public open override /*1*/ fun f(/*0*/ f: Foo<*>?): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }