Use a known-resolved ItemId as a parent in partial specialization children

The `with_id` id will potentially end up unused if we find we already
have an item (with its own distinct `ItemId`) for the type, so if we
pass `with_id` as the parent id when parsing children it is potentially
a dangling reference. Instead, use the canonical template declaration as
the parent. It is already parsed and has a known-resolvable `ItemId`.

0 files changed, 0 insertions, 0 deletions