How to disable redirect from non-existent subdomains to wp-signup.php in Wordpress Multisite?

Question

CMS

I know about define( 'NOBLOGREDIRECT', '' );
Then it will not redirect to wp-signup.php, but to the root of the domain.
Is it possible to make it not redirect anywhere?
So that WordPress does not track calls to non-existent subdomains at all?
It's just that a plugin works for me that processes categories as subdomains, and multisite does not allow it to work.
That is, it turns out category.multisite.domain.ru and redirects to wp-signup or to the root.
There are subdomains as multisite, and they have categories as subdomains of subdomains, and this does not work here.