Fix stability hole with `static _` The `underscore_const_names` only gated const items with `_` as the name. `static _: () = ();` works on beta without feature gates right now, this PR fixes that.
Fix stability hole with `static _` The `underscore_const_names` only gated const items with `_` as the name. `static _: () = ();` works on beta without feature gates right now, this PR fixes that.