skin tone picker emoji is not rendered with twemoji

it is rendered with the system's default. note that this is separate from #1898, as renders with twemoji everywhere else

Version 1.0.0, Beta 36, Channel Beta, Build 40, iOS 18.7.8 (arm64), Device iPhone17,1, Locale en-US, Push apns, Flutter 3.44.6, Dart 3.12.2

Expected behaviour the emoji should be rendered with twemoji