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/lambdaArgument.kt

@@ -0,0 +1,16 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// !CHECK_TYPE
+
+class A<T> {
+    fun foo(f: (T) -> Unit) {}
+}
+
+fun test(a: A<out Number>, b: A<in Number>) {
+    a.foo {
+        it checkType { _<Number>() }
+    }
+
+    b.foo {
+        it checkType { _<Any?>() }
+    }
+}