fix(tabs): line indicator transition bug (#550)

[luo3house]

Fix #550

react-activation set display none for child elements, that causes line transition stops calculate.

In this PR, line transition does calculate by useUpdateEffect() after react-activation re-shows child elements on mount.

Also fix a potential bug of type toggle. Reproduction: https://stackblitz.com/edit/vitejs-vite-umbtuh Steps to reproduce:

• npm i && npm dev
• Click the toggler button at the top
• Then see indicator stucks.

[github-actions[bot]]

PR preview has been successfully built and deployed to https://react-vant-pr-615.surge.sh.