Problem: during restore in watchableStore.Restore, synced watchers are moved to unsynced.
minRev will be behind since it's not updated when watcher stays synced.
Solution: update minRev
fixes: https://github.com/etcd-io/etcd/issues/15271
Signed-off-by: Bogdan Kanivets <bkanivets@apple.com>
Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>