fix(reader): Support both position and equality delete files on the same FileScanTask #5520
| Job | Run time | 
|---|---|
| 3m 0s | |
| 10m 39s | |
| 6m 58s | |
| 3m 24s | |
| 14m 6s | |
| 50s | |
| 34s | |
| 2m 9s | |
| 7m 48s | |
| 3m 23s | |
| 52m 51s | 
| Job | Run time | 
|---|---|
| 3m 0s | |
| 10m 39s | |
| 6m 58s | |
| 3m 24s | |
| 14m 6s | |
| 50s | |
| 34s | |
| 2m 9s | |
| 7m 48s | |
| 3m 23s | |
| 52m 51s |