Fix warnings from requires filtering
    
    Avoid using %{name} in %{mozappdir} definition as it's expanded
    separately for each subpackage when doing requires filtering, which then
    leads to expanding it as /usr/lib64/thunderbird,
    /usr/lib64/thunderbird-wayland etc, which is incorrect.
    
    Just spell out "thunderbird" instead of "%{name}" to avoid this.
    
    find: ‘/builddir/build/BUILDROOT/thunderbird-78.7.0-2.fc33.x86_64/usr/lib64/thunderbird-wayland’: No such file or directory