Rollback after abort when force param is used via api

So I believe this has actually been broken since it was added in https://github.com/Shopify/shipit-engine/pull/1087
The issue is that while it correctly sets what to rollback to, without setting rollback_once_aborted the rollback will not trigger because that flag is checked before rolling back https://github.com/Shopify/shipit-engine/blob/fcd420c2554e2b741d6595f365abbc2c0230bf06/app/models/shipit/deploy.rb#L288-L292
Even in the initial PR in test, both params are set https://github.com/Shopify/shipit-engine/commit/d463adb758c29f38b9753a454a682c745f1a3f1e#diff-3130766d64891bca0b504fe915c08e798e04e2c9930cfeb64adc22ba60a7d8d0R312
I believe the need for two flags is that when empty we rollback to the last commit, though it may make sense to bypass this flag if the rollback_to is set 🤷‍♂️

Shopify / shipit-engine