crucible-mir: Use correct identifiers for TransCustom intrinsics
#1716
| Job | Run time |
|---|---|
| 9s | |
| 34m 4s | |
| 0s | |
| 32m 14s | |
| 31m 50s | |
| 34m 52s | |
| 20m 9s | |
| 35m 29s | |
| 18m 39s | |
| 3h 27m 26s |