Github emoji api missing item

https://api.github.com/emojis

heard_mcdonald_islands url returns 404

these all do too:
ascension_island, bouvet_island, ceuta_melilla, clipperton_island, diego_garcia, st_martin, svaldbard_jan_mayen, tristan_da_cunha, united_nations, us_outlying_islands

Hi @wrclark welcome to the GitHub community!
Thanks for bringing this to our attention. This has been escalated to the appropriate team.