fix tidb full-text-search vector missed (#11337)

Author: JohnJyong

api/core/rag/datasource/vdb/tidb_on_qdrant/tidb_on_qdrant_vector.py

@@ -375,7 +375,6 @@ def search_by_full_text(self, query: str, **kwargs: Any) -> list[Document]:
         for result in results:
             if result:
                 document = self._document_from_scored_point(result, Field.CONTENT_KEY.value, Field.METADATA_KEY.value)
-                document.metadata["vector"] = result.vector
                 documents.append(document)
 
         return documents
@@ -394,6 +393,7 @@ def _document_from_scored_point(
     ) -> Document:
         return Document(
             page_content=scored_point.payload.get(content_payload_key),
+            vector=scored_point.vector,
             metadata=scored_point.payload.get(metadata_payload_key) or {},
         )