Fix provisional GRV Proxy ID in GetReadVersionReply

This was not set and can cause infinite loop in simulation where the client
calls getConsistentReadVersion(), in which we do "continue" for stale GRV reply
and retry. Then this repeats forever.

fdbserver/ClusterRecovery.actor.cpp

@@ -851,6 +851,7 @@ ACTOR Future<Standalone<CommitTransactionRef>> provisionalMaster(Reference<Clust
 				rep.version = parent->lastEpochEnd;
 				rep.locked = locked;
 				rep.metadataVersion = metadataVersion;
+				rep.proxyId = parent->provisionalGrvProxies[0].id();
 				req.reply.send(rep);
 			} else
 				req.reply.send(Never()); // We can't perform causally consistent reads without recovering