wp_die() status code Menus component updates (parent ticket: #64009)

[callumbw95]

If you have come here directly, please refer back to the parent ticket here: #000000

This ticket is regarding the wp_die() function calls within the Media component and will cover the following locations:

src/wp-admin/link-add.php	13	User Permissions: does not have access	500	403
src/wp-admin/link.php	120	Missing: link	500	404
src/wp-admin/link-manager.php	12	User Permissions: does not have access	500	403
src/wp-admin/link-manager.php	92	User Permissions: does not have access	500	403

There are however the following function calls I have not touched as I felt they were already valid with their current status code:

Filepath	Line Number	Status Code
src/wp-admin/link-parse-opml.php	​82	500
src/wp-admin/nav-menus.php	​19	500
src/wp-admin/nav-menus.php	​24	403

Please have a look through the suggested changes documented here, and any/all feedback is appreciated. 😃

…s related to the media component

Trac ticket: 64011