liveQueryCollections are set to ready even if one of it's source collections is not ready yet

```ts
const collection = createCollection<{ id: string }>({
  sync: {
    sync({ begin, commit }) {
      begin()
      commit()
    },
  },
  getKey: (item) => item.id,
  startSync: true,
})

const liveQuery = createLiveQueryCollection({
  query: (q) => q.from({ collection }),
  startSync: true,
})
```

`liveQuery.isReady()` is `true` even though `collection` is not ready yet