Bug: Duplicates in rsbr store

[juligasa]

Problem

@GaboHBeaumont Sees this panic error in the logs

Service Error: !!!
golang.org/x/exp/slices.order2CmpFunc[...](...)
    golang.org/x/[email protected]/slices/zsortanyfunc.go:299
golang.org/x/exp/slices.medianCmpFunc[...]({0x14001bfcd08?, 0x33, 0x0}, 0xb?, 0xc, 0xd, 0x140029e7648, 0x1060d8ad0)
    golang.org/x/[email protected]/slices/zsortanyfunc.go:309 +0x124
golang.org/x/exp/slices.medianAdjacentCmpFunc[...](...)
    golang.org/x/[email protected]/slices/zsortanyfunc.go:316
golang.org/x/exp/slices.choosePivotCmpFunc[...]({0x14001bfcd08, 0x33, 0x47}, 0x14000030f50, 0x14000000000?, 0x1060d8ad0?)
    golang.org/x/[email protected]/slices/zsortanyfunc.go:279 +0xb4
golang.org/x/exp/slices.pdqsortCmpFunc[...]({0x14001bfcd08, 0x33, 0x47}, 0x140029e7778, 0x105589a04?, 0x140004e2230?, 0x1060d8ad0?)
    golang.org/x/[email protected]/slices/zsortanyfunc.go:89 +0xd8
golang.org/x/exp/slices.SortFunc[...](...)
    golang.org/x/[email protected]/slices/sort.go:33
seed/backend/syncing/rbsr.(sliceStore).Seal(0x140029e7b78?)
    seed/backend/syncing/rbsr/storage.go:54 +0x94
seed/backend/syncing.syncEntities({0x1060f4870, 0x14001ad0620}, {0x14002824d50, 0x26}, {0x1060e42e0, 0x14002f31ca0}, {0x1060ffc30, 0x1400002d620}, {0x12e7e8938, 0x14005d7cfc0}, ...)
    seed/backend/syncing/syncing.go:681 +0x59c
seed/backend/syncing.(worker).sync(0x1400222c820, {0x1060f4800?, 0x14001c78140?})
    seed/backend/syncing/worker.go:211 +0x5f0
seed/backend/syncing.(worker).start(0x1400222c820, {0x1060f4800?, 0x140005ccdc0?}, 0x14000b0c3a0, 0xdf8475800)
    seed/backend/syncing/worker.go:162 +0x4d8
created by seed/backend/syncing.(Service).refreshWorkers in goroutine 761
    seed/backend/syncing/syncing.go:244 +0x328

Steps to Reproduce

We have Gabo's db and we can see if there are multiple blobs returned by the related blobs query

GaboDB.zip

Expected Behavior

Debug Info

[juligasa]

ea9b135