F36/KDE: Add xdg-desktop-portal-gnome temporarily

This is temporarily needed until the linked issues are fixed.

See:
- https://github.com/flatpak/xdg-desktop-portal-gtk/issues/355
- https://bugzilla.redhat.com/show_bug.cgi?id=2012315
- https://pagure.io/fedora-kde/SIG/issue/120
- https://pagure.io/fedora-comps/c/6371a81d3a8597ec3409038c2d7c2829b4c798b0?branch=main

comps-f36.xml.in

@@ -3202,6 +3202,7 @@
       <packagereq type="default">polkit-kde</packagereq>
       <packagereq type="default">qt5-qtdeclarative</packagereq>
       <packagereq type="default">spectacle</packagereq>
+      <packagereq type="default">xdg-desktop-portal-gnome</packagereq>
       <packagereq type="default">xorg-x11-drv-libinput</packagereq>
     </packagelist>
   </group>