Add e2e tests to verify block templates can be customized if the theme has its own custom templates

[Aljullu]

Changes proposed in this Pull Request:

This PR:

1. Creates a new Playwright test environment so we run tests in a block theme with custom templates.
2. In that environment, it adds a test for each template to verify they can be customized.
3. It updates some package.json scripts and some docs that were not up to date.
4. Removes plugins/woocommerce-blocks/.github/workflows/playwright.yml, as I understand, that file has been superseded by .github/workflows/blocks-playwright.yml.

Part of #43416.

How to test the changes in this Pull Request:

Note: no need to test this for the release.

1. Verify e2e tests pass and there is a job specific for tests run in a block theme with templates.
2. Locally run npm run test:e2e:side-effects, npm run test:e2e:side-effects:report, npm run test:e2e:classic-theme, npm run test:e2e:classic-theme:report, npm run test:e2e:block-theme-with-templates and npm run test:e2e:block-theme-with-templates:report and verify all of them work (the report ones should open the report in your browser once finished).
3. Read the updated docs and verify they make sense.

Changelog entry

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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

Comment

Add e2e tests to verify block templates can be customized if the theme has its own custom templates.

[github-actions]

Test Results Summary

Commit SHA: af23dd2

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 37s
E2E Tests	270	0	0	13	0	283	5m 53s

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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.

[github-actions]

Hi @imanish003,

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]

Hi @imanish003,

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

[imanish003]

Thank you for adding E2E tests for the theme with custom templates 🙌🏻.

I've tested them locally and everything passed on my end. I've left a few minor suggestions in the review. Please feel free to overlook any nitpicks that don't resonate with you. However, there's one change regarding the “Hello World in the template” string that I believe is necessary.

Additionally, I'm not sure why, but when I run npm run test:e2e:side-effects, it seems to execute all tests, which is puzzling. Are you experiencing the same issue?

[Aljullu]

Thanks for all the useful suggestions, @imanish003! I implemented most of the changes, so this is ready for another review.

[imanish003]

Thank you so much for quickly making the changes. I've left one minor comment, but I'm pre-approving the PR. Everything else looks great 🚀