fix: support default for BeforeUnload prompt
#9829
| Job | Run time |
|---|---|
| 1m 32s | |
| 1m 31s | |
| 1m 20s | |
| 1m 38s | |
| 1m 5s | |
| 1m 15s | |
| 1m 24s | |
| 1m 10s | |
| 54s | |
| 56s | |
| 1m 1s | |
| 55s | |
| 4m 49s | |
| 3m 27s | |
| 3m 23s | |
| 5m 23s | |
| 1s | |
| 31m 44s |