refac: disable direct connections by default to avoid confusion

backend/open_webui/config.py

@@ -871,7 +871,7 @@ CACHE_DIR.mkdir(parents=True, exist_ok=True)
 ENABLE_DIRECT_CONNECTIONS = PersistentConfig(
     "ENABLE_DIRECT_CONNECTIONS",
     "direct.enable",
-    os.environ.get("ENABLE_DIRECT_CONNECTIONS", "True").lower() == "true",
+    os.environ.get("ENABLE_DIRECT_CONNECTIONS", "False").lower() == "true",
 )
 
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