reftable: fix quadratic behavior when re-creating deleted refs #28866
| Job | Run time |
|---|---|
| 6s | |
| 1m 25s | |
| 4m 13s | |
| 7m 13s | |
| 5m 4s | |
| 3m 44s | |
| 1m 32s | |
| 5m 56s | |
| 29m 6s | |
| 29m 5s | |
| 32m 42s | |
| 32m 34s | |
| 7m 32s | |
| 23m 14s | |
| 4m 59s | |
| 21m 14s | |
| 19m 29s | |
| 19m 35s | |
| 19m 30s | |
| 2m 55s | |
| 21m 54s | |
| 10m 5s | |
| 18m 14s | |
| 18m 44s | |
| 22m 8s | |
| 0s | |
| -1s | |
| 24m 9s | |
| 13m 49s | |
| 8m 14s | |
| 22m 22s | |
| 7m 36s | |
| 11m 29s | |
| 11m 33s | |
| 5m 45s | |
| 7m 8s | |
| 9m 7s | |
| 12m 7s | |
| 8m 45s | |
| 7m 12s | |
| 10m 56s | |
| 10m 58s | |
| 5m 58s | |
| 7m 3s | |
| 12m 52s | |
| 7m 48s | |
| 14m 42s | |
| 9h 41m 45s |