Prevent unnecessary work in UnionType->describe()
#26134
| Job | Run time |
|---|---|
| 49s | |
| 2m 19s | |
| 1m 7s | |
| 4m 16s | |
| 4m 47s | |
| 2m 24s | |
| 1m 58s | |
| 3m 39s | |
| 4m 50s | |
| 3m 47s | |
| 1m 46s | |
| 1m 57s | |
| 2m 0s | |
| 4m 31s | |
| 2m 24s | |
| 4m 53s | |
| 2m 5s | |
| 2m 2s | |
| 1m 57s | |
| 1m 59s | |
| 1m 58s | |
| 1m 51s | |
| 1m 55s | |
| 1m 33s | |
| 1m 56s | |
| 1m 54s | |
| 1m 53s | |
| 0s | |
| 1h 8m 30s |