Design Picker: Sort the selected categories to the top and keep the order between them unchanged

[arthur791004]

Related to https://github.com/Automattic/dotcom-forge/issues/10015

Proposed Changes

• Sort the selected categories to the top and keep the order between them unchanged (the same as the API response by D167989-code) regardless of the order of selected goals.

Why are these changes being made?

Testing Instructions

• Create a new site
• On the Goals screen, select "Sell services or digital goods" first and then "Publish a blog"
• On the Design Picker screen, ensure the order of selected categories are "Blog, Business, Store" (The feature & subject will be separated after we update the UI)
• Go back to the Goals screen
• Reverse the selected order. That is, select "Publish a blog" first and then "Sell services or digital goods"
• On the Design Picker screen, ensure the order of selected categories are still "Blog, Business, Store"

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-126731

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126731&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126731&env=a8c-for-agencies

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

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

To test WordPress.com changes, run install-plugin.sh $pluginSlug feat/design-picker-category-order on your sandbox.

[arthur791004]

we have to clone the array of the goals to avoid the sort function mutate the original array.

[taipeicoder]

LGTM!