fix(kyc): 验证成功后刷新KYC状态

在跳转到实名认证页面前调用 ref.invalidate(kycStatusProvider)
确保手机号验证状态能正确更新

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mobile-app/lib/features/kyc/presentation/pages/change_phone_page.dart

@@ -438,7 +438,8 @@ class _ChangePhonePageState extends ConsumerState<ChangePhonePage> {
             width: double.infinity,
             child: OutlinedButton(
               onPressed: () {
-                // 直接跳转到实名认证页面，清除中间页面栈
+                // 刷新 KYC 状态后跳转到实名认证页面
+                ref.invalidate(kycStatusProvider);
                 context.go(RoutePaths.kycEntry);
               },
               style: OutlinedButton.styleFrom(