Bug where duplicate copy packages marked as non-copy

[dsherret]

The code here is wrong. It should instead select the lowest value copy package for each nv in case there are multiple copy packages. Not a big deal because this scenario is probably super rare and it only leads to more disk space being used in some scenarios.

deno_npm/src/resolution/snapshot.rs

Line 516 in b01f0e4

&& copy_index_zero_nvs.contains(&packages[i].pkg_id.nv)