fix(spec): refuse a whitespace-only reference on lookup / master_detail
#32890
| Job | Run time |
|---|---|
| 16s | |
| 5m 16s | |
| 5m 16s | |
| 5m 18s | |
| 5m 15s | |
| 5m 16s | |
| 5m 18s | |
| 5m 16s | |
| 5m 17s | |
| 5m 18s | |
| 5m 19s | |
| 5m 19s | |
| 5m 17s | |
| -1s | |
| -1s | |
| 14s | |
| 16s | |
| 1h 4m 9s |