Add {CancelableTaskManager} to handle {Cancelable} concurrent tasks.

src/global-handles.cc

Index: src/global-handles.cc
diff --git a/src/global-handles.cc b/src/global-handles.cc
index 3608fe81b684df8894e106169d82b71d01340c58..f9c4a4f580213f833f2833b07ad74459cd32a6a8 100644
--- a/src/global-handles.cc
+++ b/src/global-handles.cc
@@ -533,10 +533,10 @@ class GlobalHandles::PendingPhantomCallbacksSecondPassTask
   }
 
   void RunInternal() override {
-    isolate_->heap()->CallGCPrologueCallbacks(
+    isolate()->heap()->CallGCPrologueCallbacks(
         GCType::kGCTypeProcessWeakCallbacks, kNoGCCallbackFlags);
-    InvokeSecondPassPhantomCallbacks(&pending_phantom_callbacks_, isolate_);
-    isolate_->heap()->CallGCEpilogueCallbacks(
+    InvokeSecondPassPhantomCallbacks(&pending_phantom_callbacks_, isolate());
+    isolate()->heap()->CallGCEpilogueCallbacks(
         GCType::kGCTypeProcessWeakCallbacks, kNoGCCallbackFlags);
   }