SpaceUnaryOperatorSniff will fail with PHP 8 match

Problem/Motivation

When I filed #3350432: SpaceUnaryOperatorSniff does not recognize T_LINE I realized there's more of a problem here: match() will happily fail this too.

Steps to reproduce

https://3v4l.org/a1bVU

Proposed resolution

Give up. Recognizing an unary operator is near impossible using such a simple technique and it'll break as PHP adds more.

Remaining tasks

Remove this sniff.

User interface changes

API changes

Data model changes