Sergey Biryukov e70b0f7c3d Tests: Avoid duplicate queries in some WP_Query tests.
When passing args to the `WP_Query::__construct()` method, it internally executes the `WP_Query::get_posts()` method and stores the result in the `WP_Query::posts` property.

When calling `WP_Query::get_posts()` again, the same SQL query gets executed, and the result is again stored in the `WP_Query::posts` property.

Thus, the correct usage is to read the posts already stored in the `WP_Query::posts` property.

Follow-up to [1062/tests], [1065/tests], [1066/tests], [1070/tests], [29805], [31286], [49900], [51144].

Props david.binda.
Fixes #54822.

git-svn-id: https://develop.svn.wordpress.org/trunk@52577 602fd350-edb4-49c9-b593-d223f7449a82
2022-01-14 17:50:52 +00:00
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