Hidden files in Files app

Hi, I’m using the Apple camera adapter (lightning to USB) to connect my TomTom to my iPhone. While on the road I can create and download routes from a website to my iPhone, and then transfer these routes to my TomTom Rider (these are .itn files). The only problem is when I transfer a route called test.itn, after transferring it to the navigation device it has also created a file ._test.itn on my TomTom, which shows as a route on the device, but (of course) is not a valid route file. The filesyetm on the TomTom is FAT, so it does not hide files starting with a "." like iOs and macOs.

The Files app on the iPhone does not show this file because it starts with a “.”, and these files are hidden from the user on iOS. Is there a way to force the Files app to show these files, so I can remove them, or does anyone know of a third party file manager app for iOS that can handle these hidden files?

Or, even better disable the creation of these ._ files…