Release v1.45.0-rc.0

Changelog Full Changelog Features add circuit breaker for gloas block production ( #9598 ) ( @nflaig ) emit payload_attestation_message SSE event ( #9636 ) ( @nflaig ) add peer manager internals metrics and dashboard ( #9523 ) ( @nazarhussain ) register client code for Caplin and Nimbus-EL ( #9623 ) ( @ensi321 ) align proposer preferences api with latest spec ( #9570 ) ( @nflaig ) return 204 when…