[tree] non-preferred-priority statements are not used at all (when a preferred one exists, even if not usable for the tree)

[aleksejrs]

At first I thought priorities weren't used at all, and planned to file an issue asking to use the priorities at times of ambiguity.

But today, I created a few items not officially classified under https://www.wikidata.org/wiki/Q951964, but I put a few of them there on Wikidata:

• https://www.wikidata.org/wiki/Q26994960
• https://www.wikidata.org/wiki/Q26995321
• https://www.wikidata.org/wiki/Q26995392

, but they weren't always shown at https://tools.wmflabs.org/wikidata-todo/tree.html?q=951964&rp=279,31&lang=ru , which I suspect was because I changed the priority of some of the non-Q951964 "is subclass" statements to "preferred". Some time after I undid the change, https://www.wikidata.org/wiki/Q26995392 re-appeared in that tree.

Two of the items are in the tree https://tools.wmflabs.org/wikidata-todo/tree.html?q=26902699&rp=279,31&lang=ru starting with an official not-just-food item, and containing "длительного хранения" in their names.