Clean up CORS_ALLOWED_ORIGINS configuration

Refactor CORS_ALLOWED_ORIGINS to remove empty strings.

Author: sahilds1

server/balancer_backend/settings.py

@@ -67,13 +67,11 @@
 
 ROOT_URLCONF = "balancer_backend.urls"
 
-
 # CORS configuration
 CORS_ALLOWED_ORIGINS = os.environ.get("CORS_ALLOWED_ORIGINS", "http://localhost:3000").split(",")
 # Ensure no empty strings if input was empty or trailing comma
 CORS_ALLOWED_ORIGINS = [origin.strip() for origin in CORS_ALLOWED_ORIGINS if origin.strip()]
 
-
 TEMPLATES = [
     {
         "BACKEND": "django.template.backends.django.DjangoTemplates",