[iwyu] Add missing includes

This fixes a presubmit error:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Presubmit/454

It also adds another missing include.

R=machenbach@chromium.org
CC=caitp@igalia.com

Bug: v8:7490
Change-Id: I915a5bf431073410a67ff08471fd5e6974e31aa1
No-Try: true
No-Tree-Checks: true
Reviewed-on: https://chromium-review.googlesource.com/c/1346111Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57671}

src/builtins/builtins-object-gen.cc

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/builtins/builtins-object-gen.h"
+
 #include "src/builtins/builtins-utils-gen.h"
 #include "src/builtins/builtins.h"
 #include "src/code-stub-assembler.h"
@@ -11,6 +13,7 @@
 #include "src/objects/js-generator.h"
 #include "src/objects/property-descriptor-object.h"
 #include "src/objects/shared-function-info.h"
+#include "src/property-details.h"
 
 namespace v8 {
 namespace internal {