Part of [ENG-7014](https://linear.app/comm/issue/ENG-10619/handle-case-when-backup-version-is-newer-than-the-app-version)
We need to query store version that will be stored in `synced_metadata`. This will have three purposes:
1. Address https://phab.comm.dev/D14780#inline-81137
2. Being able to detect when backup is newer than app and abort backup restore
3. Store backup store version somewhere and trigger backup restore after user updates the app
4. In future, reading user specific data we store in `synced_metadata` (e.g. `currentUserInfo`)
Depends on D14774