fix: correct Redis error handler syntax bug

Fixed critical syntax error in Redis error event handler where a double
arrow function prevented error logging from executing.

Before: redis.on("error", (error) => () => { ... })
After:  redis.on("error", (error) => { ... })

Impact:
- Redis errors were silently ignored
- Debugging connection issues was impossible
- Production incidents went undetected
- Critical for operational visibility

Author: anuragchvn-blip

src/shared/utils/redis/redis.ts

@@ -19,7 +19,7 @@ try {
   });
 }
 
-redis.on("error", (error) => () => {
+redis.on("error", (error) => {
   logger({
     level: "error",
     message: `Redis error: ${error}`,