Improve network user searching

[johnbillion]

Follow-up to #27304

On the Users screen in Network Admin, searching for users is a terrible experience. The user needs to be aware of the need to use a * wildcard character at the beginning and/or end of the search term, otherwise the search requires an exact match.

We should default to searching everything, all the time, as an extension to what we've just done in #27304.

[johnbillion]

32913.patch​ wraps the search term in asterisks in the same way that performing a user search on a single-site installation does.

This could have some performance concerns, but I think the same arguments presented in #27304 apply, in that being able to find users is much more important than the speed of the query.

[johnbillion]

Any objections?

[DrewAPicture]

Replying to johnbillion:

Any objections?

I think we should drop it in and it give a shot. Early enough in the cycle that any performance concerns should surface.

[wonderboymusic]

we have fast user queries somewhere?

[johnbillion]

In 33801:

Bring network admin user searching to parity with single site user searching by wrapping search terms in asterisks. This means that searches don't require an exact match and therefore significantly reduces friction when searching for users on the network admin screens.

Fixes #32913