Postscript.
Since you mentioned creating an AppQube, I tried to see if I could successfully create an AppQube with a Fedora template without a {basic system}.
As a result, at first, as I expected, there was no {basic system}, and the Application tag only had {missing application}. However, when I launched the AppFdoraQube Refresh application tag, the FedoraApp application (including the basic system) was revived, as was the original Fedora Templete application and {basic system}.
However, the system that controls {Service} among the four {basic systems} is {missing application} (the same system as fedora42XFCE {application missing in template}), {Servce} cannot be used in apps and templates.
By the way, Refresh Applications with Fedora templates without {basic system} has tried many times, but this has not happened.
summary
1 I was able to create an AppQube with a Fedora template that doesn’t have a {basic system}
2 At first, AppQube only had {missing application} notation, but by refreshing the application, both AppQube and Templete will revive the application and {basic system}
3 However, the system that controls the {Service} of the {basic system} is written as {missing application}, and neither Templete nor App can add functions from {service}.
Also, the update was mentioned, so I took a look at that as well. The Update tag on the Qubes desktop said this {The following qubes are based on distributions that are no longer suported fedora-40-xfce}.I used to think that this information was not relevant to the latest Fedora, such as Fedora 42Xfce.
Also, there were many Qubes that were not updated to date. I ignored this because I didn’t think it would be related to the newly installed Templete.