[gc] avoid new-space double-aligned allocations until fixed

This is a partial revert of
https://chromium-review.googlesource.com/c/v8/v8/+/1675960

Bug: v8:9472
Change-Id: I57ffc8d90a57336197cbf6ee27ebf9d1c914ec73
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1697745
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Auto-Submit: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62654}

src/runtime/runtime-internal.cc

@@ -300,6 +300,11 @@ RUNTIME_FUNCTION(Runtime_AllocateInYoungGeneration) {
   if (!allow_large_object_allocation) {
     CHECK(size <= kMaxRegularHeapObjectSize);
   }
+
+  // TODO(v8:9472): Until double-aligned allocation is fixed for new-space
+  // allocations, don't request it.
+  double_align = false;
+
   return *isolate->factory()->NewFillerObject(size, double_align,
                                               AllocationType::kYoung);
 }