Description of the Change

Updates all checks for ElasticPress and feature integration to use a utility function that properly and centrally accounts for admin and AJAX requests. Addresses #2148.

Benefits

Uses a single utility function for determining whether ElasticPress or features should be integrated for each request, ensuring consistency with whether integration is enabled for certain features.

Verification Process

Features should be active on queries under the following conditions:

Default behaviour:

When ep_admin_wp_query_integration is true:

When ep_ajax_wp_query_integration is true:

Or when both filters are true:

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Applicable Issues

#2148

Changelog Entry

WIP