fix: add default reader meta - NPPM-2440

[leogermani]

All Submissions:

• Have you followed the Newspack Contributing guideline?
• Does your code follow the WordPress' coding standards and VIP Go coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

When Woo creates a user as part of a flow, for example gifting a subscription, it was not adding RAS specific metadata.

This PR assumes that any programatically created user via Woo's method is a user without a password and unverified.

(Note: It's known that when a reader registers it will trigger the new callback twice (via hook and via the reader_register method). I think that's fine).

How to test the changes in this Pull Request:

1. Create a giftable subscription
2. As a user, purchase this product as a gift
3. Check the email received by the gift recipient and visit my account
4. Try to login as a gift recipient and confirm you are not asked for a password. OTP is the default login strategy

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

[github-actions]

Hey @leogermani, good job getting this PR merged! 🎉

Now, the needs-changelog label has been added to it.

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Thank you! ❤️