A4A: Manual referrals code cleanup

[yashwin]

Proposed Changes

• This PR removes the automated referrals logic used throughout A4A, including the Referrals Dashboard and FAQ pages.
• It also removes the isNewLayout prop from StepSectionItem, as we always use the new layout.

Why are these changes being made?

• Code cleanup

Testing Instructions

• Open the A4A live link
• Go to the below pages and compare the same with the live link of this PR: A4A: Remove Temporary Core style props on Simple list, Consolidated card and Step section components. #101505 or production if it is merged > Verify there are no major changes apart from the text sizes that is fixed here and now it matches the Core Typography.

1. Referrals: Dashboard > Empty view
2. Referrals: FAQ
3. Partner Directory: Dashboard
4. WooPayments: Site up page
5. Team
6. Migrations: Commissions > Empty view

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 UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• 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:build-137611

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-137611&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-137611&env=a8c-for-agencies

[matticbot]

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

Sections (~2065 bytes removed 📉 [gzipped])

name                                parsed_size           gzip_size
a8c-for-agencies-referrals              -5317 B  (-0.5%)    -1539 B  (-0.5%)
a8c-for-agencies-woopayments             -346 B  (-0.0%)     -145 B  (-0.1%)
a8c-for-agencies-overview                -281 B  (-0.0%)      -82 B  (-0.0%)
a8c-for-agencies-marketplace             -275 B  (-0.0%)     -103 B  (-0.0%)
a8c-for-agencies-client                  -275 B  (-0.0%)     -103 B  (-0.0%)
a8c-for-agencies-purchases               -274 B  (-0.0%)     -102 B  (-0.0%)
a8c-for-agencies-partner-directory       -239 B  (-0.0%)      -74 B  (-0.0%)
a8c-for-agencies-team                    -224 B  (-0.0%)      -68 B  (-0.0%)
a8c-for-agencies-migrations              -209 B  (-0.0%)      -76 B  (-0.0%)
a8c-for-agencies-sites                   -137 B  (-0.0%)      -38 B  (-0.0%)
a8c-for-agencies-settings                -137 B  (-0.1%)      -38 B  (-0.1%)
a8c-for-agencies-plugins                 -137 B  (-0.0%)      -38 B  (-0.0%)
a8c-for-agencies-agency-tier             -137 B  (-0.1%)      -38 B  (-0.1%)
a8c-for-agencies                         -137 B  (-0.1%)      -38 B  (-0.1%)
scan                                      -77 B  (-0.0%)      -28 B  (-0.0%)
jetpack-social                            -77 B  (-0.0%)      -30 B  (-0.0%)
jetpack-search                            -77 B  (-0.0%)      -29 B  (-0.0%)
jetpack-cloud-agency-dashboard            -77 B  (-0.0%)      -30 B  (-0.0%)
backup                                    -77 B  (-0.0%)      -31 B  (-0.0%)
a8c-for-agencies-signup                   -77 B  (-0.0%)      -28 B  (-0.0%)
a8c-for-agencies-landing                  -77 B  (-0.0%)      -30 B  (-0.1%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

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.

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug refactor/a4a/referrals/manual-referrals-cleanup on your sandbox.