Resolve all major comments

Author: Bihan Rana

src/dstack/_internal/proxy/gateway/model_routers/sglang.py

@@ -142,8 +142,11 @@ def update_replicas(self, replica_urls: List[str]) -> None:
         for worker in current_workers:
             url = worker.get("url")
             if url and isinstance(url, str):
-                current_worker_urls.add(url)
-        target_worker_urls = set(replica_urls)
+                # Normalize URL by removing trailing slashes to avoid path artifacts
+                normalized_url = url.rstrip("/")
+                current_worker_urls.add(normalized_url)
+        # Normalize target URLs to ensure consistent comparison
+        target_worker_urls = {url.rstrip("/") for url in replica_urls}
 
         # Workers to add
         workers_to_add = target_worker_urls - current_worker_urls