fix: Add unique fast path for empty categoricals
#14001
| Job | Run time |
|---|---|
| 3m 49s | |
| 11m 17s | |
| 10m 20s | |
| 7m 27s | |
| 1m 51s | |
| 5m 52s | |
| 40m 36s |
unique fast path for empty categoricals
#14001
| Job | Run time |
|---|---|
| 3m 49s | |
| 11m 17s | |
| 10m 20s | |
| 7m 27s | |
| 1m 51s | |
| 5m 52s | |
| 40m 36s |