67e2358fbb
do not emit `OpaqueCast` projections with `-Znext-solver` We normalize opaque types in their defining scope if the new solver is enabled. This means projections do not contain any 'revealable' opaque types we need to worry about. We either have a type which has been normalized by writeback or we need to normalize it anyways. r? ```@compiler-errors``` ```@oli-obk```