Correctly handle the Proxy IsCallable and IsConstructor information (#4264)

The `IsCallable(target)` and `IsConstructor(target)` info
can't be stored in the target/handler values.
If the input for the ProxyCreate was a revocable Proxy the original target's
callable/constructor information must be retained even after the
Proxy was revoked.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com

jerry-core/ecma/operations/ecma-proxy-object.c

@@ -66,6 +66,20 @@ ecma_proxy_create (ecma_value_t target, /**< proxy target */
 
   ecma_proxy_object_t *proxy_obj_p = (ecma_proxy_object_t *) obj_p;
 
+  /* ES2015: 7. */
+  /* ES11+: 5. */
+  if (ecma_op_is_callable (target))
+  {
+    ECMA_SET_FIRST_BIT_TO_POINTER_TAG (obj_p->u1.property_list_cp);
+
+    /* ES2015: 7.b. */
+    /* ES11+: 5.b. */
+    if (ecma_is_constructor (target))
+    {
+      ECMA_SET_SECOND_BIT_TO_POINTER_TAG (obj_p->u1.property_list_cp);
+    }
+  }
+
   /* ES2015: 8. */
   /* ES11+: 6. */
   proxy_obj_p->target = target;