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/unsafeVarianceStar.kt

@@ -0,0 +1,9 @@
+
+interface A<out K> {
+    fun foo(x: @UnsafeVariance K): Unit
+}
+
+fun test(a: A<*>) {
+    a.foo(null)
+    a.foo(Any())
+}