Contradiction between text of Jetpack "free" plan with Jetpack Backup product

#### Steps to reproduce the issue

1. Buy Jetpack Backup (Daily) (or realtime too, but I purchased Daily)
2. Head to `/wp-admin/admin.php?page=jetpack#/my-plan`
3. Observe upgrade prompt for Jetpack Free product: "Worried about security? Get backups, automated security fixes and more: Upgrade now"

#### What I expected

Not to be prompted to upgrade for backups (since I already have them)

#### What happened instead

I was prompted to upgrade to get backups.

**Screenshots**
If applicable, add screenshots to help explain your problem.

Start at the WordPress admin route `/wp-admin/admin.php?page=jetpack#/my-plan` and reproduce the prompt with Jetpack Backup Daily active. Trace how the Free plan message is assembled and how existing Backup purchases are represented; done means users who already have Backup are not prompted to upgrade for backups.

Written by the indexing model from the issue text.