Release v1.44.0-rc.2

Changelog Full Changelog Features add standard fast confirmation metrics ( #9552 ) ( @nflaig ) queue execution payload envelope until its block is imported ( #9520 ) ( @nflaig ) emit fast_confirmation SSE event per beacon-APIs ( #9439 ) ( @nazarhussain ) fast confirmation rule ( #8837 ) ( @nazarhussain ) expose EMPTY_BLOCK_HASH constant in config API ( #9465 ) ( @markolazic01 ) implement EIP-8045…