* changes: Use "commit" instead of "execute" for rollbacks. Rename PACKAGE_ROLLBACK_EXECUTED to ROLLBACK_COMMITTED. Remove unused RollbackManager APIs. Use RollbackManager.getAvailableRollbacks in RollbackTest Use new RollbackManager API in RollbackPackageHealthObserver. Add RollbackManager.getAvailableRollbacks API. Include all relevant packages in RollbackInfo.