fix: let Node.js perform microtask checkpoint in the main process (#24131)

* fix: let Node.js perform microtask checkpoint in the main process

* fix: don't specify v8::MicrotasksScope for explicit policy

* fix: remove checkpoint from some call-sites

We already perform checkpoint at the end of a task,
either through MicrotaskRunner or through NodeBindings.
There isn't a need to add them again when calling into JS
except when dealing with promises.

* fix: remove checkpoint from some call-sites

We already perform checkpoint at the end of a task,
either through MicrotaskRunner or through NodeBindings.
There isn't a need to add them again when calling into JS
except when dealing with promises.

* fix incorrect specs

* default constructor arguments are considered for explicit mark

* add regression spec

spec-main/node-spec.ts

@@ -323,4 +323,18 @@ describe('node feature', () => {
       done();
     });
   });
+
+  it('performs microtask checkpoint correctly', (done) => {
+    const f3 = async () => {
+      return new Promise((resolve, reject) => {
+        reject(new Error('oops'));
+      });
+    };
+
+    process.once('unhandledRejection', () => done('catch block is delayed to next tick'));
+
+    setTimeout(() => {
+      f3().catch(() => done());
+    });
+  });
 });