Improve Memberships, Clarify Notifications, and Fix Blocking

Desired Membership has been removed in an effort to simplify the platform.

Clearer push notification toggle text so it’s obvious that turning it on enables notifications on the current device

Dynamic plan ordering in membership settings so custom products appear correctly

Search keyboard shortcuts now keep working when the compact search field is focused, so tabs can be switched without leaving search

Blocked phone numbers are now checked before a client record exists, so blocked senders follow the blocked path consistently

Pre-sold memberships no longer appear registered before a payment method is attached