Nav menu item's term validation error

[ashour]

There is a wrong error validation for the menu item term existance in
wp-admin/includes/class-walker-nav-menu-edit.php: 77 start_el() function

$original_object instead of $original_title

[ashour]

A fix for the error validation of the $original_object variable

[SergeyBiryukov]

Hi there, welcome to WordPress Trac! Thanks for the report.

Good catch! Introduced in [45891], which added the new $original_object variable but missed updating the is_wp_error() check.

[SergeyBiryukov]

In 48076:

Menus: Check the correct variable in Walker_Nav_Menu_Edit::start_el() when menu item is a taxonomy term.

Follow-up to [45891].

Props ashour.
Fixes #50415.