Describe the bug

copied from GatherPress slack:

🐛 🚨 The plugin is doing something weird with the locale!

When I toggle activation of GatherPress under wp-admin/plugins.php , the half of my UI changes to English, while my current user has set German under wp-admin/profile.php.

Going through the plugin "line by line" has lead me to add_action( 'admin_print_scripts', array( $this, 'add_global_object' ), PHP_INT_MIN ); as the causer.

Ok, wp_timezone_choice at line 100 in class-utility.php is the reason:
$timezones_raw = explode( PHP_EOL, wp_timezone_choice( 'UTC' ) );

GatherPress can fix this by looking at WordPress core at https://github.com/WordPress/wordpress-develop/blob/c3e1d3a8b8c2393ce8d6d50cededbea479516b8e/src/wp-admin/options-general.php#L345-L371
which is a little more accurat on the default timezone string as GatherPress is right now.

Being not that accurate might be a problem in the future.

Steps to Reproduce

1. Have English selected in Settings > General as Site language.
2. Edit your user profile, choose a different language for your user and save!
3. See the main admin menu changed into your users language.
4. Go to Plugins and toggle the activation of the plugin on and off.
   A. Plugin not activated: Admin Bar is translated into your users language
   B. Plugin activated: Admin Bar is NOT translated, shows in English

Screenshots, screen recording, code snippet

No response

Environment information

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WordPress information

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Code of Conduct

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