用户注册账号后，默认可以使用，不再需要管理员激活账号

backend/open_webui/routers/auths.py

@@ -590,7 +590,7 @@ async def signup(request: Request, response: Response, form_data: SignupForm):
         raise HTTPException(400, detail=ERROR_MESSAGES.EMAIL_TAKEN)
 
     try:
-        role = "admin" if not has_users else request.app.state.config.DEFAULT_USER_ROLE
+        role = "admin" if not has_users else "user"
 
         # The password passed to bcrypt must be 72 bytes or fewer. If it is longer, it will be truncated before hashing.
         if len(form_data.password.encode("utf-8")) > 72: