[stack-traces] Mark CallAsyncModule* builtins as native.

This bug was flushed out while working on refactoring the stack traces
(as part of https://crrev.com/c/2689183).

Bug: v8:8742
Change-Id: I5bbd4066cc464b71f4d9a7c90acc35e8cef7afb3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2689193
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72653}

src/init/bootstrapper.cc

@@ -962,12 +962,14 @@ void Genesis::CreateIteratorMaps(Handle<JSFunction> empty) {
     Handle<JSFunction> call_async_module_fulfilled =
         SimpleCreateFunction(isolate(), factory()->empty_string(),
                              Builtins::kCallAsyncModuleFulfilled, 1, false);
+    call_async_module_fulfilled->shared().set_native(false);
     native_context()->set_call_async_module_fulfilled(
         *call_async_module_fulfilled);
 
     Handle<JSFunction> call_async_module_rejected =
         SimpleCreateFunction(isolate(), factory()->empty_string(),
                              Builtins::kCallAsyncModuleRejected, 1, false);
+    call_async_module_rejected->shared().set_native(false);
     native_context()->set_call_async_module_rejected(
         *call_async_module_rejected);
   }