Missing subjects in chii_subject_fields

部分 subject 在 chii_subjects 中存在，但 chii_subject_fields 里没有对应的数据，测试 /p1/wiki/subjects/{subjectID} 的时候会 500。
```
+------------+
| missing_id |
+------------+
| 265 |
| 4828 |
| 6049 |
| 11197 |
| 69253 |
| 116461 |
| 117777 |
| 220445 |
| 226750 |
| 261729 |
| 277554 |
| 298767 |
| 495 |
| 497 |
| 499 |
| 61178 |
+------------+
```

Start by reproducing the 500 response from /p1/wiki/subjects/{subjectID} for the listed IDs, then compare those records in chii_subjects and chii_subject_fields. Done means each listed subject has corresponding chii_subject_fields data and the endpoint no longer returns 500.

Written by the indexing model from the issue text.