StreamRegistry: support allocating stream without genesis block #2194
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Currently the node passes the protobuf serialised genesis block when allocating a stream to streams registry. As part of migrating to replicated streams the node will stop doing this and nodes can request the genesis block from one of the replicas if it needs it. This saves on calldata and storage costs.
This PR adds 2 functions:
AllocateStream
that doesn't accept the genesis block bytesgetStreamWithGenesisHash
as a future replacement forgetStreamWithGenesis
Follow-up changes after this is deployed: