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/MLOut.kt

@@ -0,0 +1,18 @@
+// !CHECK_TYPE
+
+// FILE: A.java
+public class A {
+    public java.util.List<? extends CharSequence> foo() {}
+}
+
+// FILE: main.kt
+
+fun foo2(x: A, y: MutableList<out CharSequence>) {
+    x.foo().isEmpty()
+    x.foo().get(0) checkType { _<CharSequence>() }
+    x.foo().iterator() checkType { _<MutableIterator<CharSequence>>() }
+
+    y.isEmpty()
+    y.get(0) checkType { _<CharSequence>() }
+    y.iterator() checkType { _<MutableIterator<CharSequence>>() }
+}