test: don't use .ts for unknown extension tests
#10995
| Job | Run time |
|---|---|
| 1m 13s | |
| 2m 2s | |
| 6m 11s | |
| 0s | |
| 5m 16s | |
| 6m 26s | |
| 5m 20s | |
| 5m 32s | |
| 4m 50s | |
| 5m 14s | |
| 4m 26s | |
| 5m 21s | |
| 4m 37s | |
| 6m 46s | |
| 10m 8s | |
| 8m 46s | |
| 2m 32s | |
| 4m 26s | |
| 2m 57s | |
| 4m 26s | |
| 11m 44s | |
| 9m 9s | |
| 2m 25s | |
| 3m 30s | |
| 3m 4s | |
| 2h 6m 21s |