Convert CommunityAlert dates to strings

[timolegros]

Link to Issue

Closes: #9016

Description of Changes

• Proof of concept solution for tRPC mangles Date objects in the client thanks to Zod and JSON.stringify. #7866

Test Plan

• CRUD community alert subscriptions in the notification settings

Deployment Plan

Other Considerations

[masvelio]

nice, so this is the pattern we should follow from now on? Should we refactor other places in the app using this approach?

[timolegros]

nice, so this is the pattern we should follow from now on? Should we refactor other places in the app using this approach?

Yes, we can gradually transition models to use strings instead of dates but this was a very simple/specific case. Other models may extensively utilize Sequelize converted dates (e.g. Thread) so doing this may prove inefficient. We will need to do this on a case-by-case basis.