Feat: Add question parameter to edit chunk modal (#3875)

### What problem does this PR solve?

Close #3873

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

sdk/python/ragflow_sdk/modules/chunk.py

@@ -6,6 +6,7 @@ class Chunk(Base):
         self.id = ""
         self.content = ""
         self.important_keywords = []
+        self.questions = []
         self.create_time = ""
         self.create_timestamp = 0.0
         self.dataset_id = None