Billing

- [x] Support changing to Yearly on Trial
- [ ] Better guidance to add payment method
- [ ] Better guidance on Trial ends
  - https://github.com/fastrepl/char/issues/2746
  - common issue: trial done. summarize, error because no longer pro. user dont know
- [ ] User should not required to refresh plan manually after checkout

https://github.com/fastrepl/hyprnote/issues/3014