bug(find): Invalid predicates accepted

Hi, findutils mainteners

we confirmed the uu find, accepts invalid predicate flags, as we confirmed

```css
relunsec@relunsec:~/software/findutils/target/debug$ sudo ./find -neweraBcmty .
relunsec@relunsec:~/software/findutils/target/debug$ sudo /bin/find -neweraBcmty .
/bin/find: unknown predicate `-neweraBcmty'
relunsec@relunsec:~/software/findutils/target/debug$ 
```