[CLOSED PR] Wig glue trait that allows mutantraces to wear hats and hair

[Zamujasa]

well I've made the seperate PR if anyone's interested in it. I probably should have done it from the get-go, honestly. Reasonings explained there, another discussion thread for it will likely pop up.

https://github.com/goonstation/goonstation/pull/20430

worth noting that even though the original PR was closed (and this thread says "CLOSED PR"), this second one is still open and pending resolution.