Make DebugPrint use Object::Print if available

If v8_enable_object_print is set to true, we should use Object::Print
instead of Brief(Object).

R=jkummerow@chromium.org

Change-Id: I70583c15834f9332aba7760b5e104136712d4e0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1930613
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65112}

src/runtime/runtime-test.cc

@@ -751,7 +751,7 @@ RUNTIME_FUNCTION(Runtime_DebugPrint) {
     Object object = maybe_object.GetHeapObjectOrSmi();
     bool weak = maybe_object.IsWeak();
 
-#ifdef DEBUG
+#ifdef OBJECT_PRINT
     if (object.IsString() && !isolate->context().is_null()) {
       DCHECK(!weak);
       // If we have a string, assume it's a code "marker"