appstream: Don't strip .desktop extension if thats the actual id
appstream: Don't strip .desktop extension if thats the actual id

The telegram app is org.telegram.desktop, so we can't assume
the id in the appstream data that ends in .desktop is just a desktop
file extension.

GeorgesStavracas/flatpak,matthiasclasen/flatpak,GeorgesStavracas/flatpak,matthiasclasen/flatpak,handsome-feng/flatpak,flatpak/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,handsome-feng/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,flatpak/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,GeorgesStavracas/flatpak,GeorgesStavracas/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak