Prefer explicit `put(unique_ptr<T>)` over of `put(T*)`
Stop using the to-be-deprecated (and to-be-removed) put(T*)
-- see gaudi/Gaudi!1086 (merged) -- and prefer the (already existing for long) put(std::unique_ptr<T>)
.
This fixes the three remaining instances which were overlooked in !2625 (merged)...