Dataset Upload modal in Onboarding Flow broken. Remove?

[fm3]

Folder is not pre-selected, upload button does nothing. Also see https://scm.slack.com/archives/C5AKLAV0B/p1765787905429939

[fm3]

Since the onborading flow is rarely used these days (most people either use wkorg or we set up wk for them), maybe one option would be to slim it down a bit, so we don’t have to support the upload view in modal form?

[hotzenklotz]

Might be solved by #9117

[fm3]

Unfortunately for me it still behaves as described above, even with the code from #9117