Revert "fix: apply AUTH_REQUIRED flag to Streamable HTTP endpoints"

Author: madhav165

mcpgateway/main.py

@@ -448,10 +448,9 @@ async def __call__(self, scope, receive, send):
             return
 
         # Call auth check first
-        if settings.auth_required:
-            auth_ok = await streamable_http_auth(scope, receive, send)
-            if not auth_ok:
-                return
+        auth_ok = await streamable_http_auth(scope, receive, send)
+        if not auth_ok:
+            return
 
         original_path = scope.get("path", "")
         scope["modified_path"] = original_path