Use upper bound aware type approximator for intersection types inside sam types in contravariant positions to build proper types in terms of subtyping

compiler/testData/codegen/box/sam/approximation/impossibleToApproxToRepresentable.kt

@@ -0,0 +1,21 @@
+interface X
+interface Z
+
+interface A : X, Z
+interface B : X, Z
+
+fun interface IFoo<T> where T : X, T : Z {
+    fun accept(t: T)
+}
+
+fun <T> sel(x: T, y: T) = x
+
+class G<T> where T: X, T: Z {
+    fun check(x: IFoo<in T>) {}
+}
+
+fun box(): String {
+    val g = sel(G<A>(), G<B>()) // g: G<out { X & Z }>
+    g.check {} // (*) target SAM type: IFoo<{ X & Z }> (TODO: report a compile time error for this case)
+    return "OK"
+}