Text Detection detects Latin-1 text[1] that isn't only in English but also other Western languages[2], it comes from CL review[3].

[1] https://wicg.github.io/shape-detection-api/text.html#text-detection-api.
[2] https://en.wikipedia.org/wiki/Windows-1252.
[3] https://chromium-review.googlesource.com/c/chromium/src/+/813237/4/services/shape_detection/text_detection_impl_win.cc#42