ask for filename when saving in Chrome mobile

[abubelinha]

When I save a file in Chrome mobile (Samsung Galaxy S8), I am not asked for a file or path name.
My text is always saved in Downloads/Untitled.txt

I am OK being forced to use that Downloads path, but we should be allowed to handle different files.
In other projects like excalidraw you can choose your own file name (I used its mobile Chrome demo, not their app)

As mentioned here, looks like excalidraw uses this module:
https://github.com/GoogleChromeLabs/browser-fs-access

Thanks
@abubelinha