CYS - Core: fix wp-admin page visible when click on start designing

[gigitux]

Submission Review Guidelines:

• I have followed the WooCommerce Contributing Guidelines and the WordPress Coding Standards.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have reviewed my code for security best practices.
• Following the above guidelines will result in quick merges and clear and detailed feedback when appropriate.

Changes proposed in this Pull Request:

Closes #45542.

How to test the changes in this Pull Request:

Using the WooCommerce Testing Instructions Guide, include your detailed testing instructions:

1. Make sure you have the WooCommerce Beta Tester plugin installed and activated
2. Under Tools > WCA Test Helper > Features, make sure customize-store is enabled
3. Under Tools > WCA Test Helper > Tools, click on Reset Customize Your Store
4. Head over to WooCommerce > Extensions > Themes wp-admin/admin.php?page=wc-admin&tab=themes&path=%2Fextensions
5. Make sure you can visualize the Design your own button. If the current active theme is TT4, it directs users to the assembler, if not, the theme switch warning modal is displayed to confirm the user wants to proceed to the CYS flow and change their current active theme.
6. Click on wp-admin/admin.php?page=wc-admin&path=%2Fcustomize-store%2Fintro.
7. Start the flow.
8. Ensure that the wp-admin page isn't visible for a second (check the video attached to the issue).
9. Go on /wp-admin
10. Under Tools > WCA Test Helper > Tools, click on Reset Customize Your Store
11. Switch to TT3.
12. Start the flow.
13. Ensure that the wp-admin page isn't visible for a second (check the video attached to the issue).

Changelog entry

• Automatically create a changelog entry from the details below.

Significance

• Patch
• Minor
• Major

Type

• Fix - Fixes an existing bug
• Add - Adds functionality
• Update - Update existing functionality
• Dev - Development related task
• Tweak - A minor adjustment to the codebase
• Performance - Address performance issues
• Enhancement - Improvement to existing functionality

Message

CYS - Core: fix wp-admin page visible when click on start designing

Comment

[github-actions]

Hi @nefeline,

Apart from reviewing the code changes, please make sure to review the testing instructions as well.

You can follow this guide to find out what good testing instructions should look like:
https://github.com/woocommerce/woocommerce/wiki/Writing-high-quality-testing-instructions

[github-actions]

Test Results Summary

Commit SHA: 703845a

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 39s
E2E Tests	80	1	0	271	0	352	8m 58s

⚠️ Warning

Please address the following issues prior to merging this pull request:

• FAILED/BROKEN TESTS. There were failed and/or broken API and E2E tests.

---

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.

[albarin]

👏
Confirmed the admin page is longer visible.