fix(blog): hydration errors due to newsletter component

[LeoMcA]

Summary

Problem

Hydration errors on blog when logged in:

Uncaught Error: Minified React error #418; visit https://reactjs.org/docs/error-decoder.html?invariant=418 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    React 6
    x scheduler.production.min.js:13
    T scheduler.production.min.js:14
    3498 scheduler.production.min.js:14
    Webpack 12
2 react-dom.production.min.js:131:158
Uncaught Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
    React 6
    x scheduler.production.min.js:13
    T scheduler.production.min.js:14
    3498 scheduler.production.min.js:14
    Webpack 12
react-dom.production.min.js:292:38

Solution

Ensure the form isn't rendered differently on initial hydration on the client when logged in.

---

How did you test this change?

• Checkout main
• yarn dev
• yarn build:blog
• start rumba, log in on localhost:5042
• open blog
• see hydration error
• checkout PR branch
• yarn dev
• yarn build:blog
• open blog on localhost:5042
• see no hydration error

[fiji-flo]

Thanks