Do not eagerly instantiate accessors' JSFunction.

src/builtins.h

Index: src/builtins.h
diff --git a/src/builtins.h b/src/builtins.h
index dfe39d6b522aee2cb11c5eb123151fcddd7d8efd..1b5f06986285d393b16d815a803b38a4ce6cae41 100644
--- a/src/builtins.h
+++ b/src/builtins.h
@@ -380,7 +380,7 @@ class Builtins {
   bool is_initialized() const { return initialized_; }
 
   MUST_USE_RESULT static MaybeHandle<Object> InvokeApiFunction(
-      Handle<JSFunction> function, Handle<Object> receiver, int argc,
+      Handle<HeapObject> function, Handle<Object> receiver, int argc,
       Handle<Object> args[]);
 
  private: