Site Health: Include value of EMPTY_TRASH_DAYS constant in debug data.

Follow-up to [44986], [45078], [58855].

Props deepakprajapati, desrosj, dhruvang21, SergeyBiryukov.
Fixes #64189.

git-svn-id: https://develop.svn.wordpress.org/trunk@61359 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-admin/includes/class-wp-debug-data.php

@@ -1592,6 +1592,11 @@ private static function get_wp_constants(): array {
 				'value' => $db_collate,
 				'debug' => $db_collate_debug,
 			),
+			'EMPTY_TRASH_DAYS'    => array(
+				'label' => 'EMPTY_TRASH_DAYS',
+				'value' => EMPTY_TRASH_DAYS ? EMPTY_TRASH_DAYS : __( 'Empty value' ),
+				'debug' => EMPTY_TRASH_DAYS,
+			),
 		);
 
 		return array(