Yes, it should be the Kingdom of Hawai'i and listed as a country, not an issuer, as its current status as a US state is irrelevant to the fact that the coins they made were for use in an independent sovereign kingdom.
In general, the current numista policy it that if a former country is part of a modern day country then the former country is an issuer under the latter.
Under that logic, Puerto Rico and Vieques Island should also be issuers under the US.
Master Coin Referee
Coin referee for CRI, GTM, HND, NIC, PAN, and SLV.
Revisor principal de monedas
Revisor de Numista para monedas de CRI, GTM, HND, NIC, PAN y SLV.