#7884442 Clarify the domain registration & transfer policy in the domain management screen.

Fixes #74521

Proposed Changes

This PR updates the explanation text of “Get your domain” dialog in /domains/manage/, clarifying that it’s annual plan only since a monthly plan is a paid plan yet doesn’t have that.

Note: instead of “any annual paid plan”, I’ve put in “any annual plan” since I feel “paid” is a bit redundant. an annual plan should imply “paid” without ambiguity.

Testing Instructions

Logging-in as a user without any annual plan, go /domains/manage and confirm that the copy is updated accordingly.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the “[Status] String Freeze” label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the “[Status] Needs Privacy Updates” label if this pull request changes what data or activity we track or use (p4TIVU-ajp-p2)?