autoplot.conf_mat() text is hard to read at times

[EmilHvitfeldt]

High frequency areas of the conf_mat() can be hard to read because of the contrast. something should be done.

It is hard because sometime the text isn't super needed (at a glance you can read the plot with the grey), and sometimes it would be nice to read the numbers directly

library(yardstick)
library(ggplot2)

two_class_example |>
  conf_mat(truth, predicted) |>
  autoplot(type = "heatmap")

^{Created on 2023-07-11 with reprex v2.0.2}