country_names does not work correctly for COW statelist

[andybega]

library(states)
sfind(946)
#>     list ccode code3c country_name      start        end microstate
#> 474  COW   946    KIR     Kiribati 1999-09-14 9999-12-31         NA
country_names(946, list = "COW")
#> [1] NA

sfind(970)
#>     list ccode code3c country_name      start        end microstate
#> 232   GW   970    KBI     Kiribati 1979-07-12 9999-12-31       TRUE
#> 478  COW   970    NAU        Nauru 1999-09-14 9999-12-31         NA
country_names(970, list = "GW")
#> [1] "Kiribati"
country_names(970, list = "COW")
#> [1] "Kiribati"

^{Created on 2020-10-23 by the reprex package (v0.3.0)}