Subscription Manager: Add Switch account link

[lezama]

Related to Automattic/jetpack#36504

Proposed Changes

Before:

After:

Testing Instructions

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• https://wpcalypso.wordpress.com/devdocs/docs/testing/index.md 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-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-6d717a089dbe6161473d1ace355394b67c6ff653

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-6d717a089dbe6161473d1ace355394b67c6ff653&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-6d717a089dbe6161473d1ace355394b67c6ff653&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~648 bytes removed 📉 [gzipped])

name                   parsed_size           gzip_size
entry-subscriptions        +3569 B  (+0.2%)    +1143 B  (+0.2%)
entry-stepper                +39 B  (+0.0%)     -152 B  (-0.0%)
entry-main                   +39 B  (+0.0%)     -142 B  (-0.0%)
entry-login                  +39 B  (+0.0%)     -143 B  (-0.0%)
entry-domains-landing        +26 B  (+0.0%)     -111 B  (-0.1%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Async-loaded Components (~55 bytes added 📈 [gzipped])

name                                         parsed_size           gzip_size
async-load-calypso-reader-site-subscription       +137 B  (+0.8%)      +55 B  (+0.9%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[simison]

Approving and fine to merge but @crisbusquets you could take a look at the copy/design to see if can have something smother looking?

[crisbusquets]

Approving and fine to merge but @crisbusquets you could take a look at the copy/design to see if can have something smother looking?

@simison @lezama this works for me as a first iteration. The only think I would change is to underline the line (accessibility).

I've opened an issue to iterate the message and add more context: #90460