fix: prevent logout when auto-login is true (#7209)

* 📝 (use-post-logout.ts): import Cookies from "react-cookie" to handle cookies in the logout functionality
💡 (use-post-logout.ts): update logic to check for "auto_login_lf" cookie value in addition to autoLogin state before logging out the user

* 📝 (use-post-logout.ts): add constants for IS_AUTO_LOGIN and LANGFLOW_AUTO_LOGIN_OPTION for better code readability and maintainability

src/frontend/src/controllers/API/queries/auth/use-post-logout.ts

@@ -1,6 +1,11 @@
 import useAuthStore from "@/stores/authStore";
 import { useMutationFunctionType } from "@/types/api";
 
+import {
+  IS_AUTO_LOGIN,
+  LANGFLOW_AUTO_LOGIN_OPTION,
+} from "@/constants/constants";
+import { Cookies } from "react-cookie";
 import { api } from "../../api";
 import { getURL } from "../../helpers/constants";
 import { UseRequestProcessor } from "../../services/request-processor";
@@ -9,10 +14,16 @@ export const useLogout: useMutationFunctionType<undefined, void> = (
   options?,
 ) => {
   const { mutate } = UseRequestProcessor();
+  const cookies = new Cookies();
   const logout = useAuthStore((state) => state.logout);
+  const isAutoLoginEnv = IS_AUTO_LOGIN;
 
   async function logoutUser(): Promise<any> {
-    const autoLogin = useAuthStore.getState().autoLogin;
+    const autoLogin =
+      useAuthStore.getState().autoLogin ||
+      cookies.get(LANGFLOW_AUTO_LOGIN_OPTION) === "auto" ||
+      isAutoLoginEnv;
+
     if (autoLogin) {
       return {};
     }