get_items built its `AND i.item_type IN (…)` fragment by interpolating
each requested type into the SQL string, while `search`, `get_favorites`
and `prune_stale_catalog` in the same file bind the identical filter as
`?` placeholders. Follow the existing pattern so the listing query is
consistent with its neighbours.
The type values bind between the six parent-matching ids and the
favourites user id, matching where `{type_filter}` lands in the
statement.
TRACES: UR-065 | DR-212 | UT-206
dtourolle
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