fix: revert no server start (#6790)

**Why**
- we want to start a server so we can allow health checks on workers

packages/medusa/src/commands/start.js

@@ -24,11 +24,7 @@ export default async function ({ port, directory }) {
         expressApp: app,
       })
 
-      const shouldStartServer =
-        configModule.projectConfig.worker_mode !== "worker"
-
       let server
-      if (shouldStartServer) {
       const serverActivity = Logger.activity(`Creating server`)
       server = GracefulShutdownServer.create(
         app.listen(port, (err) => {
@@ -56,15 +52,12 @@ export default async function ({ port, directory }) {
 
       process.on("SIGTERM", gracefulShutDown)
       process.on("SIGINT", gracefulShutDown)
-      } else {
-        Logger.info("Running in worker mode, server will not be started.")
-      }
 
       scheduleJob(CRON_SCHEDULE, () => {
         track("PING")
       })
 
-      return shouldStartServer ? { dbConnection, server } : { dbConnection }
+      return { dbConnection, server }
     } catch (err) {
       Logger.error("Error starting server", err)
       process.exit(1)