Rollup merge of #50207 - wesleywiser:hash_const_data, r=eddyb
Rollup merge of #50207 - wesleywiser:hash_const_data, r=eddyb

Hash EntryKind::AssociatedConst const data

Related to #49991
r? @michaelwoerister
cc @eddyb

GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,GBGamer/rust,graydon/rust,graydon/rust,aidancully/rust,GBGamer/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,GBGamer/rust