Fix union of lowercase/uppercase string with empty string #19162
| Job | Run time |
|---|---|
| 2m 25s | |
| 30s | |
| 1m 26s | |
| 2m 22s | |
| 30s | |
| 2m 35s | |
| 2m 14s | |
| 2m 21s | |
| 2m 11s | |
| 2m 22s | |
| 2m 9s | |
| 2m 22s | |
| 2m 4s | |
| 2m 23s | |
| 1m 59s | |
| 2m 22s | |
| 2m 2s | |
| 2m 22s | |
| 1m 5s | |
| 1m 11s | |
| 1m 12s | |
| 1m 8s | |
| 1m 8s | |
| 1m 6s | |
| 1m 10s | |
| 1m 10s | |
| 1m 11s | |
| 41s | |
| 47m 41s |