chore: implement keep-starknet-strange#1443 workaround

Signed-off-by: Iliya Savov <isavov@users.noreply.github.com>

.github/workflows/gomu-gomu-tests.yml

@@ -50,6 +50,8 @@ jobs:
           ./target/production/madara --dev > madara.log 2>&1 &
           MADARA_RUN_PID=$!
           while ! echo exit | nc localhost 9944; do sleep 1; done
+          # Wait for the first block to be produced (workaround for #1443)
+          until [[ "$(curl -s --request POST --url http://localhost:9944 --header 'accept: application/json' --header 'content-type: application/json' --data '{"id": 1, "jsonrpc": "2.0", "method": "starknet_blockNumber"}' | jq '.result')" -gt 1 ]]; do sleep 1; done
           cd ../gomu-gomu-no-gatling
           RUST_LOG=info cargo run -- shoot -c config/default.yaml
           kill $MADARA_RUN_PID