Exclude decomissioning nodes when opening new shards, using gRPC stream#6166

ncoiffier-celonis wants to merge 6 commits intoquickwit-oss:mainquickwit-oss/quickwit:mainfrom

ncoiffier-celonis:fix-ingestion-gap-when-decomissioning-node-gRPCncoiffier-celonis/quickwit:fix-ingestion-gap-when-decomissioning-node-gRPCCopy head branch name to clipboard