[heap] Fix tree

No-Try: true
Change-Id: Ica1a6a3d432392df8acee9acf7fc460d71ba8b10
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3851542Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82673}

src/heap/incremental-marking.cc

@@ -610,7 +610,7 @@ bool IncrementalMarking::TryInitializeTaskTimeout() {
 }
 
 bool IncrementalMarking::ShouldDoEmbedderStep() {
-  return IsRunning() && FLAG_incremental_marking_wrappers &&
+  return IsMarking() && FLAG_incremental_marking_wrappers &&
          heap_->local_embedder_heap_tracer()->InUse();
 }