Improve accessibility around product editor tabs

[joshuatf]

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:

Adds accessibility for keyboard only and non-sighted users to the product tabs. Note that follow-ups will address:

• Placement of tabs in header (pending header PR)
• Tests around tabs
• Disabled tabs (pending decision on template layouts)

Closes (part of) #37096 .

How to test the changes in this Pull Request:

• Have you followed the Writing high-quality testing instructions guide?

1. Open your favorite screen reader
2. Enable the blocks product editor feature
3. Navigate through the tabs using the tab key and arrow keys
4. Make sure tab labels are announced and that you can navigate without issue

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?
• Have you included testing instructions?

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.

[codecov]

Codecov Report

Merging #37217 (c4f1a0e) into trunk (0cf5677) will decrease coverage by 0.0%.
The diff coverage is 0.0%.

Additional details and impacted files

@@            Coverage Diff             @@
##             trunk   #37217     +/-   ##
==========================================
- Coverage     46.7%    46.7%   -0.0%     
  Complexity   17191    17191             
==========================================
  Files          429      429             
  Lines        64845    64862     +17     
==========================================
  Hits         30275    30275             
- Misses       34570    34587     +17     

Impacted Files	Coverage Δ
...ugins/woocommerce/includes/class-wc-post-types.php	2.7% <0.0%> (-0.1%)	⬇️

[github-actions]

Test Results Summary

Commit SHA: c4f1a0e

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 59s
E2E Tests	189	0	0	6	0	195	17m 59s

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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.

[louwie17]

LGTM 🚀 Thanks for working on this @joshuatf , this tested well!