build: support writing to gha

[iBotPeaches]

npm notice Publishing to https://npm.pkg.github.com/ with tag latest and default access
npm error code E403
npm error 403 403 Forbidden - PUT https://npm.pkg.github.com/@sourcetoad%2ftamagui-react-native - Permission installation not allowed to Write organization package
npm error 403 In most cases, you or one of your dependencies are requesting
npm error 403 a package version that is forbidden by your security policy, or
npm error 403 on a server you do not have access to.
npm error A complete log of this run can be found in: /home/runner/.npm/_logs/2026-02-03T13_41_39_184Z-debug-0.log

Should fix this.