Update React frontend build script to use current environment variable names

- Updated build_and_run_local.sh to reference correct REACT_APP variables
- Changed from legacy REACT_APP_SPRINGBOOT_URL to REACT_APP_MERN_SQL_ORACLE_SERVICE_URL
- Changed from legacy REACT_APP_NODEJS_URL to REACT_APP_MERN_MONGODB_JSONDUALITY_ORACLE_SERVICE_URL
- Maintains consistency with current .env configuration and other build scripts

Author: paulparkinson

financial/react-frontend/build_and_run_local.sh

@@ -7,9 +7,9 @@ echo "1. Sourcing environment variables from ../.env"
 if [ -f "../.env" ]; then
     source ../.env
     echo "   Environment variables loaded successfully!"
-    echo "   REACT_APP_SPRINGBOOT_URL: $REACT_APP_SPRINGBOOT_URL"
-    echo "   REACT_APP_HELIDON_URL: $REACT_APP_HELIDON_URL"
-    echo "   REACT_APP_NODEJS_URL: $REACT_APP_NODEJS_URL"
+    echo "   REACT_APP_MERN_SQL_ORACLE_SERVICE_URL: $REACT_APP_MERN_SQL_ORACLE_SERVICE_URL"
+    echo "   REACT_APP_MERN_MONGODB_JSONDUALITY_ORACLE_SERVICE_URL: $REACT_APP_MERN_MONGODB_JSONDUALITY_ORACLE_SERVICE_URL"
+    echo "   REACT_APP_MERN_MONGODB_SERVICE_URL: $REACT_APP_MERN_MONGODB_SERVICE_URL"
 else
     echo "   Warning: ../.env file not found, using default configuration"
 fi