src: perform check before running in runMicrotasks()

This is a continuation of #29434,
rewriting the last remaining call to RunMicrotasks.

PR-URL: #29581
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

src/node_task_queue.cc

@@ -56,7 +56,7 @@ bool RunNextTicksNative(Environment* env) {
 }
 
 static void RunMicrotasks(const FunctionCallbackInfo<Value>& args) {
-  args.GetIsolate()->RunMicrotasks();
+  MicrotasksScope::PerformCheckpoint(args.GetIsolate());
 }
 
 static void SetTickCallback(const FunctionCallbackInfo<Value>& args) {