fix encoding

app.py

@@ -247,7 +247,6 @@ if __name__ == '__main__':
                                     text_input.value = text_list[randomIndex];
                                     let x = window.scrollX, y = window.scrollY;
                                     text_input.focus();
-                                    text_input.blur();
                                     window.scrollTo(x, y);
                                     return [];
                                 }}""")