tests: conftest: fix collection of slow/slowest items
tests: conftest: fix collection of slow/slowest items

markshao/pytest,The-Compiler/pytest,Akasurde/pytest,tomviner/pytest,nicoddemus/pytest,alfredodeza/pytest,RonnyPfannschmidt/pytest,pytest-dev/pytest,nicoddemus/pytest,tomviner/pytest,The-Compiler/pytest