The 'wp-admin/admin-header.php' file outputs 'viewport' meta data. It seems the value of the viewport is hard coded into the file. (See: https://github.com/WordPress/WordPress/blob/master/wp-admin/admin-header.php line 89).
I want to edit the viewport from my custom plugin. Are there any suggestions as to how this could be done?
Any code injected via the hooks that follow the hardcoded viewport data has no effect and I cannot see any available hooks inside the section that occur before the hardcoded data.