All the builds https://download.eclipse.org/eclipse/updates/4.32-I-builds have only a content.xml

The same is also true for the release build:
https://download.eclipse.org/eclipse/updates/4.31/R-4.31-202402290520/
This is one of the most heavily uses sites so that's pretty nasty for the server.
This is the size the files should be:

Perhaps this is lingering effect from this ongoing manual processing of the file:
#509