FireX: Merge with firemodels/master - #16684

On December 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target

Unexpected input(s) 'allow-unsafe-checkout', valid inputs are ['repository', 'ref', 'token', 'ssh-key', 'ssh-known-hosts', 'ssh-strict', 'ssh-user', 'persist-credentials', 'path', 'clean', 'filter', 'sparse-checkout', 'sparse-checkout-cone-mode', 'fetch-depth', 'fetch-tags', 'show-progress', 'lfs', 'submodules', 'set-safe-directory', 'github-server-url', 'allow-unsafe-pr-checkout']