Summary Index: data does not be cleared when upload an exists document

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### Dify version

1.14.2

### Cloud or Self Hosted

Self Hosted (Docker)

### Steps to reproduce

Step:
1. Upload a file and turn on [Enable Summary]. Chunk summary is successful created.
2. Upload same file to same dataset. (From now, Summary setting is disappered)
3. Summary will not be regenrated at all. But summary data is still in database. (Vector data seems like same)
4. Regerate summary from button at the top of the page. New summary generated but old data still in the database.

Postion:
When upload same file, knowledge_config.duplicate is True and only go into DuplicateDocumentIndexingTask.
https://github.com/langgenius/dify/blob/eae44cfecb65957d00cfcb727217652e04be57e1/api/services/dataset_service.py#L2307-L2312

### ✔️ Expected Behavior

- Generate new summary when upload same file.
- Clear old summary pg data.
- Clear old summary vector data.

### ❌ Actual Behavior

_No response_