Flathub is not accepting my app that uses Foreign Functions and Memory API

[Davide Perini]

Hi there,
I wrote a small app that uses Foreign Functions and Memory API to show 
some toasts on Linux
using libnotify.

The bindings is available here:
https://github.com/sblantipodi/firefly_luciferin/tree/dx12_pipeline/src/main/java/org/dpsoftware/gui/bindings/notify

Flathub maintainers are not accepting my app because they say that 
libnotify is already included in their runtime and that the libnotify is 
"build only".
I bundled the builded .so file in my app and it works well,
but they don't like that I need a .so file for this and they are not 
accepting my app.

Is there something I'm not understanding?

https://github.com/flathub/flathub/pull/5874#discussion_r1854943995

Is there a way to do what I'm doing better?

Thanks
Davide