Limit cookie dedupe logic to only WooCommerce Cart cookies

[senadir]

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:

Builds from #42828 but only limit the logic to WooCommerce cookies.

Closes #43463

How to test the changes in this Pull Request:

Like #42828 use this updated snippet

add_action(
	'template_redirect',
	function() {
		if ( is_front_page() ) {
			return;
		}

		if ( is_page() ) {
			$products = wc_get_products(
				array(
					'posts_per_page' => 5,
					'status'         => 'publish',
					'type'           => 'simple',
				)
			);
			wc_empty_cart();
			foreach ( $products as $product ) {
				WC()->cart->add_to_cart( $product->get_id(), 1 );
			}
			header( 'Set-Cookie: my_cookie=value;path=/', false );
			header( 'Set-Cookie: my_cookie=value;path=/wp-admin', false );
			wp_redirect( get_site_url() );
			exit;
		}
	},
	20
);

1. Open the network tab in the browser inspector and make sure you're recording and that "Preserve log" is checked.
2. Visit any page that isn't the home page.
3. You will see 2 requests, open the 302 one.
4. See that Woo cookies aren't duplicated but other cookies are there fine.

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

Comment

[github-actions]

Hi @mikejolley, @woocommerce/rubik

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: 0aec6a6

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 38s
E2E Tests	147	8	18	106	0	279	33m 55s

⚠️ 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.

[mikejolley]

Tested with and without the new code after the latest commit; seems to work as intended. The session cookie was only created once.