trigger failover switch to alternative endpoints when an active endpoint is syncing

It would be good to trigger a failover adn switch to an alternative `target` whenever an RPC endpoint is syncing which results in bee node stuck at:

```
"time"="2023-12-22 10:09:02.894014" "level"="info" "logger"="node/transaction" "msg"="still waiting for Ethereum to sync" "block_time"="2023-12-22 05:29:05 +0100 CET"
```