fix missing chunk size passed to the engine

streamlit_app.py

@@ -294,6 +294,7 @@ if uploaded_file and not st.session_state.loaded_embeddings:
             st.session_state['binary'] = binary
 
             st.session_state['doc_id'] = hash = st.session_state['rqa'][model].create_memory_embeddings(tmp_file.name,
+                                                                                                        chunk_size=chunk_size,
                                                                                                         perc_overlap=0.1)
             st.session_state['loaded_embeddings'] = True
             st.session_state.messages = []