fix(risedev): connector-node start-up script (risingwavelabs#8590)

Co-authored-by: lmatz <[email protected]>

Author: Eric Fu

java/connector-node/assembly/scripts/start-service.sh

@@ -15,6 +15,7 @@ while getopts ":h:p:" o; do
 done
 shift $((OPTIND-1))
 
+
 DIR="$( cd "$( dirname "$0" )" && pwd )"
 MAIN='com.risingwave.connector.ConnectorService'
 PORT=50051

src/risedevtool/connector.toml

@@ -54,7 +54,7 @@ if !(command -v javac &> /dev/null && [[ "$(javac -version 2>&1 | awk '{print $2
   exit 1
 fi
 
-if command -v mvn &> /dev/null; then
+if (command -v mvn &> /dev/null) || [ -d "${PREFIX_BIN}/maven" ]; then
     exit 0
 else
     echo "Maven is not installed. Downloading now..."