ruff

a0c846f9 - Consider nursery rules to be in-preview for `ruff rule` (#7812)

Consider nursery rules to be in-preview for `ruff rule` (#7812) ## Summary We treat these rules as `preview` elsewhere, so adding `preview: false` to the JSON and such seems like an error. Closes https://github.com/astral-sh/ruff/issues/7804.