useFirestoreDocument/useFirestoreQuery with { subscribe: true } are not subscribing to realtime updates on remount

I've discovered a weird behaviour of useFirestoreDocument/useFirestoreQuery hooks: `{ subscribe: true }` option will have no effect, if query is remounted (in default `cacheTime` 5 mins window), after became inactive. Probably, It will be good, if query will resubscribe to realtime changes, if there is a snapshot in a cache and there are no active subscribers.

As a workaround we are setting `cacheTime` to 0, so query will trigger queryFn again and put active subscription on firestore query.