[wp-trac] [WordPress Trac] #64977: The `core/get-site-info` ability returns wrong locale code in the admin

[WordPress Trac]

#64977: The `core/get-site-info` ability returns wrong locale code in the admin
---------------------------------+---------------------
 Reporter:  afercia              |       Owner:  (none)
     Type:  defect (bug)         |      Status:  new
 Priority:  normal               |   Milestone:  7.1
Component:  Abilities API        |     Version:  6.9
 Severity:  normal               |  Resolution:
 Keywords:  abilities has-patch  |     Focuses:
---------------------------------+---------------------

Comment (by r1k0):

 == Patch Testing Report

 Patch Tested: https://github.com/WordPress/wordpress-develop/pull/11502

 === Environment
 - WordPress: 7.1-alpha-62161-src
 - PHP: 8.3.30
 - Server: nginx/1.29.5
 - Database: mysqli (Server: 8.4.8 / Client: mysqlnd 8.3.30)
 - Browser: Chrome 147.0.0.0
 - OS: Windows 10/11
 - Theme: Twenty Twenty-Five 1.4
 - MU Plugins: None activated
 - Plugins:
   * Test Reports 1.2.1

 === Steps taken
 1. In WP Admin > Settings > General, set the Site Language to a language
 other than English, e.g., Italian.
 2. In WP Admin > Users > Profile, set the Language to a different language
 e.g., French.
 3. Used the code provided by the reporter and created a plugin.
 {{{#!php
 <?php
 /**
  * Plugin Name: Test Language Locale
  * Description: Difference in language locale
  * Version: 1.0
 */

 add_action( 'wp_footer', 'language_locale' );

 add_action( 'admin_footer', 'language_locale' );

 function language_locale () {
         $ability = wp_get_ability( 'core/get-site-info' );
         $result  = $ability->execute();
         var_dump( $result['language'] );
 }
 }}}
 4. Head over to the footer of the site on the frontend and observe the
 returned language before and after the patch.
 5. Head over to the admin dashboard, scroll down to the end of the page
 and observe the returned language before and after the patch.
 2. ✅ Patch is solving the problem

 === Expected result
 - The site locale should be returned in the admin dashboard instead of the
 user-specific admin locale.

 === Additional Notes
 - None

 === Screenshots/Screencast with results
 - Before:
 [[Image(https://i.ibb.co/bMPDq4Zf/language-locale-before.png)]]

 - After:
 [[Image(https://i.ibb.co/Xx2NMzTG/language-locale-after.png)]]

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/64977#comment:11>
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