Bug summary

In #25247 we deprecated find_nearest_contour with no replacement or mention in the release notes. Why was this deprecated, and what is the replacement? ping @anntzer @ianthomas23

https://github.com/matplotlib/matplotlib/blob/c06a97e84b8424a87d0e294c5eaf406a1f8d0a62/lib/matplotlib/contour.py#L1391C5-L1392C68