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:

This PR updates the code introduced in #28132, such that it's consistent with the generation of the surrounding elements of the date_query, and adds the column field to the 0th element of the date query.

How to test the changes in this Pull Request:

1. From the WordPress general settings page (/wp-admin/options-general.php), set the timezone of your site to "UTC +4".
2. Create a new order from WooCommerce > Orders > Add Order (/wp-admin/post-new.php?post_type=shop_order).
3. Set the date created to 2021-05-14 @ 00:00.
4. Create a REST API Key from WooCommerce > Settings > Advanced > REST API. Take note of the consumer key and secret.
5. Make a request to the orders endpoint to verify that post_date_gmt is used. For example:

curl "https://[domain]/wp-json/wc/v3/orders?dates_are_gmt=true&after=2021-05-13T19:00:00&before=2021-05-13T22:00:00&consumer_key=[consumer_key]&consumer_secret=[consumer_secret]"

Replace [domain], [consumer_key], and [consumer_secret].
6. Verify that the order you created in step 2 is included in the results.

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 successfully run tests with your changes locally?

Changelog entry

Tweak - Updates the date_query usage in the CRUD controller to be consistent, generating an array of queries.