Skip leader slots until a vote lands (#15607)

multinode-demo/bootstrap-validator.sh

@@ -105,6 +105,7 @@ args+=(
   --vote-account "$vote_account"
   --rpc-faucet-address 127.0.0.1:9900
   --no-poh-speed-test
+  --no-wait-for-vote-to-start-leader
 )
 default_arg --gossip-port 8001
 default_arg --log -