chore(x11/libxfce4ui): Add required configure options explicitly

Otherwise, configure script continues with any missing dependencies.

%ci:no-build

x11-packages/libxfce4ui/build.sh

@@ -15,9 +15,15 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
 --with-vendor-info=Termux
 --disable-debug
 --enable-introspection=yes
+--enable-epoxy
 --enable-vala=no
 --enable-gladeui2=no
+--enable-glibtop
 --enable-gtk-doc-html=no
+--enable-libsm
+--enable-startup-notification
+--enable-x11
+--enable-wayland
 "
 
 termux_step_pre_configure() {