* [web] Remove SubscriptionFormatters, format subscription dates in the frontend
Replace the server-formatted nextPaymentDueAt/nextPaymentDueDate/
trialEndsAtFormatted fields with the raw periodEnd date and format in
the React dashboard (same strings as before, English + UTC). Also
consolidate hand-rolled trial checks onto isInFreeTrial /
SubscriptionHelper.isInTrial.
* [web] Remove the now-unused dateformat dependency
* [web] Address review: payment-dates unit test, UTC dates in acceptance test
Add a dedicated unit test asserting the exact formatted strings from
formatPaymentDate/formatPaymentDateTime, and use explicit UTC timestamps
in the SubscriptionDashboard acceptance fixtures instead of
local-timezone Date constructors.
GitOrigin-RevId: 16ac4f1098b14ef9f1478d22cf39c1357ead7dea
Antoine Clausse
ba4f024f34