This comment from an open Github issue matches my support request: [Desktop] New note is created in the "Conflicts (attachments)" folder · Issue #6081 · laurent22/joplin · GitHub
It also suggests a solution similar to the following feature request:
I look forward to an implemented solution to this bug like any of the above.
For now, how can I prevent the Conflicts notebook from being created on mobile? I don't use it, so I'd like to prevent this issue.