Image comments state that diff version is old
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### Steps to reproduce
- leave image comment on merge request diff with only one version
- look at overview tab
### Example Project
https://gitlab.com/winniehell/test/-/merge_requests/6#note_1445757027
### What is the current *bug* behavior?
> […] started a thread on an old version of the diff […]


### What is the expected *correct* behavior?
no old
issue