The use of the apostrophe in Kapiolani and Hawaii (Hawai'i) is an affectation created by a new orthography. In my personal experience in the Pacific in the seventies, all the Pacific Island languages got a makeover, the spelling becoming more phonetic, So Hawaii pronounced by non-native speakers as Huh-WHY is now commonly spoken as Hah-VHY-ee. The apostrophe makes the preceding vowel cut off short. I the past Americans spelled Puerto Rico as Porto Rico, even though native Spanish speakers always pronounced it correctly.
Thank you for the clarification