feat: tambah pengecekan isActive dan bersihkan cache saat logout

- Tampilkan Alert jika admin menonaktifkan akun user yang sedang login
- Clear React Query cache saat signOut agar data akun lama tidak bocor ke sesi berikutnya

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

providers/AuthProvider.tsx

@@ -2,6 +2,7 @@ import { ConstEnv } from '@/constants/ConstEnv';
 import { apiRegisteredToken, apiUnregisteredToken } from '@/lib/api';
 import { getToken } from '@/lib/useNotification';
 import AsyncStorage from '@react-native-async-storage/async-storage';
+import { useQueryClient } from '@tanstack/react-query';
 import CryptoES from "crypto-es";
 import { router } from "expo-router";
 import { createContext, MutableRefObject, ReactNode, useCallback, useContext, useEffect, useRef, useState } from 'react';
@@ -30,6 +31,7 @@ export function useAuthSession() {
 export default function AuthProvider({ children }: { children: ReactNode }): ReactNode {
   const tokenRef = useRef<string | null>(null);
   const [isLoading, setIsLoading] = useState(true);
+  const queryClient = useQueryClient();
 
   useEffect(() => {
     (async (): Promise<void> => {
@@ -87,6 +89,7 @@ export default function AuthProvider({ children }: { children: ReactNode }): Rea
     } finally {
       await AsyncStorage.setItem('@token', '');
       tokenRef.current = null;
+      queryClient.clear();
       router.replace('/');
     }
   }, []);