feat: add translatable XBlocks to private requirements

[nsprenkle]

Configuration Pull Request

To be coupled with the following PRs:

1. https://github.com/edx/internal-dockerfiles/pull/98
2. https://github.com/edx/edx-internal/pull/10475

Make sure that the following steps are done before merging:

• Have a Site Reliability Engineer review the PR if you don't own all of the services impacted.

n/a 👇

• If you are adding any new default values that need to be overridden when this change goes live, update internal repos and add an entry to the top of the CHANGELOG.
• Performed the appropriate testing.
• Think about how this change will affect Open edX operators and update the wiki page for the next Open edX release if needed

[nsprenkle]

After guidance from @timmc-edx , closing this PR as not necessary.