radicle: Skip invalid named folders — heartwood

Instead of failing with an InvalidId err in radicle::storage::ReadStorage::repositories for repos that don’t have a valid repository ID, we should skip them and log a warning.

                 continue;
             }
             // Skip temporary repositories
             if let Some(ext) = path.path().extension() {
                 if ext == TempRepository::EXT {
             if let Some(ext) = path.path().extension().and_then(|s| s.to_str()) {
                 if ext == TempRepository::EXT || TempRepository::DEPRECATED_EXT.contains(&ext) {
                     continue;
                 }
             }

 impl TempRepository {
     /// Extension used for the directory
     pub(crate) const EXT: &str = "tmp";
     /// Extensions used in previous versions of the codebase
     pub(crate) const DEPRECATED_EXT: [&str; 1] = ["lock"];
     const RANDOMNESS_LENGTH: usize = 6;
     pub(super) fn new<P>(root: P, rid: RepoId, info: &UserInfo) -> Result<Self, RepositoryError>