Prepare promote_consts MutVisitor to have projections interned
Prepare promote_consts MutVisitor to have projections interned

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