fix(FormTab): filter not string activeKey update

[frehaiku]

Before submitting a pull request, please make sure the following is done...

• [x] Ensure the pull request title and commit message follow the Commit Specific in English.
• [x] Fork the repo and create your branch from master or formily_next.
• [ ] If you've added code that should be tested, add tests!
• [ ] If you've changed APIs, update the documentation.
• [x] Ensure the test suite passes (npm test).
• [x] Make sure your code lints (npm run lint) - we've done our best to make sure these rules match our internal linting guidelines.

Please do not delete the above content

---

What have you changed?

resolved https://github.com/alibaba/formily/issues/3543

[netlify[bot]]

✅ Deploy Preview for formily-element-plus ready!

Name	Link
🔨 Latest commit	046b929149d9907363582e2a5ce516af4813b36e
🔍 Latest deploy log	https://app.netlify.com/sites/formily-element-plus/deploys/63764465b0ef270008e1beec
😎 Deploy Preview	https://deploy-preview-25--formily-element-plus.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.