🐛 Bug: "Screencast from ..." not detected as default alt text

[JoshuaKGoldberg]

Coming over from JoshuaKGoldberg/eslint-plugin-expect-type#155 (comment), someone posted a comment like:

![Screencast from 23 02 2024 19 15 19](https://github.com/JoshuaKGoldberg/eslint-plugin-expect-type/assets/540079/8c8da5f5-0656-48d6-98e1-7fe179bb7ef7)

I think that alt text should be considered invalid, right?

[mohammee1]

QMGVXZNYCCRVFTAWKTB242KTM6ZLXQMN

[mohammee1]

QMGVXZNYCCRVFTAWKTB242KTM6ZLXQMN