Disable language-based geolocation

I am using geolocation with the Apache server module (because I also use it for other things on my server besides Matomo). Matomo’s configuration checker incorrectly reports this as an “issue” - a bug which was reported in 2018 (https://github.com/matomo-org/matomo/issues/13008) and left open, and in 2020 (https://github.com/matomo-org/matomo/issues/16427) and falsely marked “fixed” - but never mind.

The more important issue is that my server module failed for a few hours recently, because the HTTP daemon didn’t get restarted immediately after a database update. During that time, Matomo silently reverted to the browser-language-based geolocation provider. So now I’ve got a bunch of data listed as “United Kingdom” (because “en-UK”) but actually from elsewhere in the world. I would much prefer that Matomo record such data as “location unknown” - which is true - rather than making a poor guess.

I want Matomo never to use language-based guessing; and especially not by default when I explicitly configured something else. The selection of “server module” should mean “server module or nothing,” not “server module by default, but make a bad guess otherwise.” It’s more important to avoid recording a wildly incorrect location than to avoid recording the location as “unknown” - especially because locations cannot be corrected once recorded.

Is there a way to completely disable language-based guessing?