feat(payments): Switch all Mozilla accounts legal links over to Mozilla.org version

[elizabeth-ilina]

Because

• We use Mozilla account links (e.g. https://accounts.firefox.com/legal/terms) throughout the repo.

This pull request

• Updates links for all accounts & subplat surfaces to point to current versions on http://mozilla.org.

• Instead of downloadable PDFs for legal docs in SubPlat emails, replaces the links to download legal PDFs to the equivalent legal docs on http://mozilla.org (e.g., …/subscription_services_privacy_notice.pdf is replaced by https://www.mozilla.org/privacy/subscription-services/)

• Retires https://github.com/mozilla/fxa/actions/workflows/pull-legal-docs.yml github action

• Does NOT remove /legal/* routes or current Legal docs from the accounts CDN, since these need to stay in place for emails sent prior to this change to avoid broken URLs.

• Fixed subplat-moz-terms link target in the subscription email footer: The subscription email layout footer rendered a link labeled "Mozilla Accounts Terms of Service" (subplat-moz-terms) using subscriptionTermsUrl instead of the accounts ToS. Now hardcoded to https://www.mozilla.org/about/legal/terms/services/, matching how the subplat-legal link in the same file and moz-accounts-terms-url in the fxa layout already do it.

• UI Updates:

  • "Enter confirmation code" page, updated links to Terms of Service and Privacy Notice

  • 

  • /legal page:

  • 

  • Checkout, location, and upgrade pages:

    • Updated links under Mozilla accounts + links under Product Name
    • Removed "Download terms"
    • 

  • SubPlat subscription emails:

    • For any of the SubPlat emails, such as subscription cancellation or reactivation, footer of emails, Terms and cancellation policy and Privacy notice were updated to https://www.mozilla.org/about/legal/terms/subscription-services and https://www.mozilla.org/privacy/subscription-services respectively
    • 

• Updated Strapi common content

  • What was updated:
  • Dev:
    * Mozilla VPN:
    privacyNoticeUrl: from https://cdn.accounts.firefox.com/legal/privacy-notice.pdf to https://www.mozilla.org/privacy/subscription-services
    termsOfServiceUrl: from https://cdn.accounts.firefox.com/legal/tos.html to https://www.mozilla.org/about/legal/terms/subscription-services
    * 123 Foxkeh
    * 123Done Pro
    * 123Done Pro Plus
    * Cooking with Foxkeh
    * Cooking with Foxkeh 2
  • Stage:
    * Nothing yet, will update after merging

Issue that this pull request solves

Closes #PAY-3829

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[StaberindeZA]

I noticed in the FxA sign up email that the one Privacy link had query params, but the terms one didn't. Is this related to any of these changes?

[StaberindeZA]

question: why hardcode the value instead of using the variable?