Describe the bug
An invariant assertion failed in the ScheduledMerges prototype.

To Reproduce
Run cabal run prototypes-test -- --quickcheck-replay="(SMGen 3702524042292853426 14344574976030159473,92)" -p '/ScheduledMerges vs model/'

Expected behavior
There should be no assertion failure.

Output
https://github.com/IntersectMBO/lsm-tree/actions/runs/15582831616/job/43881936227

Desktop (please complete the following information):
Not applicable (I think)