[heap] Select MinorMC to finalize incremental MinorMC

This CL makes SelectGarbageCollector choose MinorMC to finalize
minor incremental marking if the allocation space is new space.

Bug: v8:13012
Change-Id: I0125d956842d83683cf3b1c5999de0e10a43dee5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3871074
Commit-Queue: Leon Bettscheider <bettscheider@google.com>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82956}

src/heap/heap.cc

@@ -470,13 +470,14 @@ GarbageCollector Heap::SelectGarbageCollector(AllocationSpace space,
     return GarbageCollector::MARK_COMPACTOR;
   }
 
-  if (incremental_marking()->IsMarkingComplete() &&
+  if (incremental_marking()->IsMajorMarking() &&
+      incremental_marking()->IsMarkingComplete() &&
       AllocationLimitOvershotByLargeMargin()) {
     *reason = "Incremental marking needs finalization";
     return GarbageCollector::MARK_COMPACTOR;
   }
 
-  if (FLAG_separate_gc_phases && incremental_marking()->IsMarking()) {
+  if (FLAG_separate_gc_phases && incremental_marking()->IsMajorMarking()) {
     // TODO(v8:12503): Remove previous condition when flag gets removed.
     *reason = "Incremental marking forced finalization";
     return GarbageCollector::MARK_COMPACTOR;