During the WordPress installation process when running the test suite, an HTTP request was always fired by a cron task and failed, because tests are run in CLI mode only.
To avoid that, the `DISABLE_WP_CRON` constant was previously added to the `bootstrap.php` file. However, the constant is not passed to the `install.php` script. This commit makes a similar change to `install.php`.
Follow-up to [760/tests], [872/tests].
Props Chouby.
Fixes#54612.
git-svn-id: https://develop.svn.wordpress.org/trunk@52359 602fd350-edb4-49c9-b593-d223f7449a82