Implicit validator node removal

[lukanus]

Hello
Thanks to eesmerdag investigation, we've discovered a scenario where it seems possible to remove node from validator that is not triggering unlink event.
There is external function deleteNodeForValidator that may be called out of the context. Inside it is calling removeNodeAddress. This path removes the node but doesn't effect in calling NodeAddressWasRemoved, so indexer won't be able to pick up this change.

┆Issue is synchronized with this Jira Task

[gannakulikova]

Hi @lukanus, thank you very much for the contribution!
We will review the details and will keep you posted with the updates :)