It's commonly called an "unactivated card," as against a "live card."
"Enhancing Payment Card Security," FAQs, ABS (The Association of Banks in Singapore)
(II) Introducing first-usage alert and activation procedure for new/replacement cards
1. What do I do when I receive the new chip card?
To prevent unauthorised use of your new card should the card be intercepted or stolen in the mail, your bank will advise you whether you have been issued an "unactivated card" or a "live card":
a. "Unactivated Card" – you have to activate your card before use.
b. "Live Card" – no activation is required by you; a first usage alert may be sent to you via SMS, email or letter (on advice of your bank).
Marqeta API, Cards
UNACTIVATED The card has been created but is non-functional. This is the initial state of a card.