Transactions - fix bug adding people to projects

Summary: Fixes T8264. Broken in D12929. Sweep all the applyBuiltin implementations and always break; rather than return

Test Plan: added myself to a project successfully (showed up as a member)

Reviewers: epriestley, chad

Subscribers: Korvin, epriestley

Maniphest Tasks: T6403, T8264

Differential Revision: https://secure.phabricator.com/D12940