primitive:pointer is inflexible in type based search

[lolbinarycat]

I would expect it to support all the same patterns that primitive:reference does, but nope! you can't really use it for anything except searching for the pointer type

some examples of things that work with one but not the other:

works	does not work
primitive:reference ->	primitive:pointer ->
primitive:reference<u8> ->	primitive:pointer<u8> ->
&u8 ->	*const u8 ->
reference<mut, u8> ->	pointer<mut, u8> ->

Tested on 1.86.0 and latest nightly.