[Vector Store] Fix function add_texts in TencentVectorDB (#24469)

Regardless of whether `embedding_func` is set or not, the 'text'
attribute of document should be assigned, otherwise the `page_content`
in the document of the final search result will be lost

libs/community/langchain_community/vectorstores/tencentvectordb.py

@@ -375,8 +375,7 @@ class TencentVectorDB(VectorStore):
                 }
                 if embeddings:
                     doc_attrs["vector"] = embeddings[id]
-                else:
-                    doc_attrs["text"] = texts[id]
+                doc_attrs["text"] = texts[id]
                 doc_attrs.update(metadata)
                 doc = self.document.Document(**doc_attrs)
                 docs.append(doc)