Deploy the stacked layout in the Products Task experiment

[adrianduffell]

All Submissions:

• Have you followed the WooCommerce Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Deploys the stacked layout in the Products Task experiment.

This is a quick change in time for the 7.2 code freeze to deploy the stacked layout in the Products Task experiment by always returning it as the chosen layout. A follow-up PR will be made to cleanup the experiment code completely.

• This PR is a very minor change/addition and does not require testing instructions (if checked you can ignore/remove the next section).

How to test the changes in this Pull Request:

On a new install,

1. Click "Add Products" from the task list.
2. See that the new stacked layout screen is shown (compare to screenshot above).
3. Check the accordion functionality works by clicking "View more product types".
4. Click the "Physical product" list item.
5. See that the "New Product " screen is shown and is pre-filled to a "simple product" type.

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you created a changelog file for each project being changed, ie pnpm --filter=<project> changelog add?

FOR PR REVIEWER ONLY:

• I have reviewed that everything is sanitized/escaped appropriately for any SQL or XSS injection possibilities. I made sure Linting is not ignored or disabled.

[github-actions]

Test Results Summary

Commit SHA: 61d7ea8

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	260	0	0	2	0	262	0m 59s
E2E Tests	186	0	0	6	0	192	13m 29s

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To view the full API test report, click here.
To view the full E2E test report, click here.
To view all test reports, visit the WooCommerce Test Reports Dashboard.

[ilyasfoo]

Tested well, thanks for working on this @adrianduffell!

I have a minor comment for removing import { loadExperimentAssignment } from '@woocommerce/explat'; import, but that's nitpicky. Feel free to merge!

[adrianduffell]

Thanks @ilyasfoo ! I've removed the import now in 61d7ea8.

[ilyasfoo]

LGTM!

[moon0326]

LGTM! 🚀