subscriptions are lost during HMR

I have some code like this , it could output correctly when app first loaded or refresh ，but don‘t work after HMR.

const pinia = createPinia();
pinia.use(({ store }) => {
  store.$subscribe((mutations, state) => {
    console.log('trigger subscritions ', mutations, state);
  });
});

I have add some breakpoints in Pinia.js ，and found that subscriptions is emty [] after HMR.

// the  "subscriptions" is empty [] after HMR
function triggerSubscriptions(subscriptions, ...args) {
    subscriptions.forEach((callback) => {
        callback(...args);
    });
}

[F0rsaken]

@posva sure, created PR with docs update https://github.com/vuejs/pinia/pull/1781 👍

[F0rsaken]

I think it would be very useful to mention it in plugins section of docs, especially in the $subscribe section as if you develop a plugin and use $subscribe or $onAction, you almost certainly want to use detach: true