Add kGCCallbackFlagCollectAllExternalMemory for external memory limit triggered gc

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 3a60e0051cbbe4a02db9eb134b84fe9d0d63b25d..7eb5af3b6a4a408f20d40e5ede782643407acb24 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -907,7 +907,10 @@ void Heap::ReportExternalMemoryPressure(const char* gc_reason) {
     if (incremental_marking()->CanBeActivated()) {
       StartIncrementalMarking(
           i::Heap::kNoGCFlags,
-          kGCCallbackFlagSynchronousPhantomCallbackProcessing, gc_reason);
+          static_cast<GCCallbackFlags>(
+              kGCCallbackFlagSynchronousPhantomCallbackProcessing |
+              kGCCallbackFlagCollectAllExternalMemory),
+          gc_reason);
     } else {
       CollectAllGarbage(i::Heap::kNoGCFlags, gc_reason,
                         kGCCallbackFlagSynchronousPhantomCallbackProcessing);