fix(reader): Support both position and equality delete files on the same FileScanTask #5523
| Job | Run time | 
|---|---|
| 1m 29s | |
| 32s | |
| 6m 32s | |
| 7m 1s | |
| 1m 2s | |
| 3m 20s | |
| 2m 57s | |
| 3m 22s | |
| 8m 17s | |
| 9m 43s | |
| 44m 15s | 
| Job | Run time | 
|---|---|
| 1m 29s | |
| 32s | |
| 6m 32s | |
| 7m 1s | |
| 1m 2s | |
| 3m 20s | |
| 2m 57s | |
| 3m 22s | |
| 8m 17s | |
| 9m 43s | |
| 44m 15s |