Add tidy_triangular to all autoplot functions

[spsanderson]

Need to add tidy_triangular to all autoplot functions

else if (atb$tibble_type == "tidy_triangular") {
        paste0(
            "Min: ", atb$.min, " - ",
            "Max: ", atb$.max, " - ",
            "Mode: ", atb$.mode
        )
    }