[lib] make calendarQuery field in SIWEAuthRequest type required

Summary:
In siweAuthRequestInputValidator, calendarQuery is required, so the Flow type should match that.

Resolves https://linear.app/comm/issue/ENG-4581/make-calendarquery-required-in-siweauthrequest

Test Plan: ran flow

Reviewers: atul

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D8729