Enable HPOS by default for new installs.

[vedanshujain]

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:

Enables HPOS on new sites by default, if they don't have any incompatible plugin present.

How to test the changes in this Pull Request:

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

We will test for 1. new site with no incompatible plugins, 2. new site with incompatible plugin, 3. existing site with posts authoritative but no incompatible plugin.

New site with no incompatible plugin:

1. Install the ZIP from this PR on a new site that doesn't have WooCommerce already.
2. Activate WooCommerce and check that HPOS is authoritative, and that sync is disabled.

New site with incompatible plugin:

1. On a new site without WooCommerce, add an incompatible plugin such WC smooth generator version 1.0.3 -> https://github.com/woocommerce/wc-smooth-generator/releases/tag/1.0.3
2. Upload when WooCommerce zip from this PR.
3. Activate WooCommerce that checks that posts are authoritative.

Existing site with posts authoritative and with or without incompatible plugins

1. On an existing site with posts authoritative, upload this zip as an upgrade.
2. Check that posts are still authoritative, and no changes to HPOS settings are made.

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]

Test Results Summary

Commit SHA: 6f4eb37

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	1m 14s
E2E Tests	205	0	0	7	0	212	19m 13s

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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 @Konamiman,

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

[Konamiman]

I have tested the three scenarios described in the testing instructions in different Jurassic Ninja sites, intsalling WooCommerce via the WordPress plugin management UI, and everything works as expected. @jorgeatorres has tested as well installing WooCommerce using the WP CLI tool, and everything worked well too.

[nigeljamesstevenson]

Thanks for the quick turnaround on this! I have assigned this one for Internal and External testing as per the p1695155631985529/1695113751.041879-slack-C0E1AV8T0