Refine member scope for types with projections

Instead of erasing descriptors with conflicting substitution,
use invariant CapturedType(<projection>) as replacement for type parameter
within default member scope.

After substitution leave such types 'as is' everywhere except return types,
use common approximation for them.

 #KT-9294 In Progress
 #KT-5411 Fixed
 #KT-8647 Fixed

 #KT-9462 Fixed
 #KT-9893 Fixed
 #KT-7581 Fixed
 #KT-7296 In Progress

compiler/testData/diagnostics/tests/generics/projectionsScope/kt7296.kt

@@ -0,0 +1,14 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+// !CHECK_TYPE
+import java.util.ArrayList
+
+class ListOfLists<T>(public val x : ArrayList<ArrayList<T>>)
+
+fun main(args : Array<String>) {
+    val a : ArrayList<ArrayList<String>> = ArrayList()
+    val b : ListOfLists<String> = ListOfLists(a)
+    val c : ListOfLists<*> = b
+    val d : ArrayList<ArrayList<*>> = <!TYPE_MISMATCH!>c.x<!>
+
+    c.x checkType { _<ArrayList<out ArrayList<*>>>() }
+}