Good catch! It does look like you might have found a place where our team forgot to add the i18n helper that allows us to extract the strings for translation - or rather, the way it is implemented does not seem to be working:
I've checked Weblate and the built-in translation bar in AtoM, and could not find these strings in either. Correspondingly, I have filed an issue ticket for this here:
I have *tentatively* tagged this issue for consideration in the 2.6.1 release. However, please note that this is not a guarantee that we will be able to address it! To learn more about how we maintain and develop AtoM, see:
If this is important to your institution and you would like to sponsor the development of a fix to ensure its inclusion in 2.6.1, please feel free to contact me off-list, and Artefactual can prepare a bug fix estimate for you.