test_runner: allow --import with no isolation
#54428
| Job | Run time |
|---|---|
| 2m 26s | |
| 1h 9m 52s | |
| 1h 12m 18s |
--import with no isolation
#54428
| Job | Run time |
|---|---|
| 2m 26s | |
| 1h 9m 52s | |
| 1h 12m 18s |