TTL exhausted error during cluster migration

[BorysTheDev]

We have a deadlock in our cluster code. lock config_update_mu_ mutex interferes vs dispatchTracker (we can not use it during PAUSE)

1. we try to set a new config via DflyClusterConfig
2. lock config_update_mu_
3. migration finalization run dispatch tracker and pause(...) simultaneously
4. migration finalization lock config_update_mu_ during update_config(...) and blocked
5. DflyClusterConfig runs dispatchTracker to set new config and we have deadlock the operations finish by timeout

[BorysTheDev]

Maybe this bug disappears after we do #2809