Rollup merge of #130618 - m-ou-se:skip-query, r=compiler-errors

Skip query in get_parent_item when possible.

For HirIds with a non-zero item local id, `self.parent_owner_iter(hir_id).next()` just returns the same HirId with the item local id set to 0, but also does a query to retrieve the Node which is ignored here, which seems wasteful.

Author: compiler-errors