prevent further stream when reset is clicked

themes/theme.py

@@ -114,6 +114,8 @@ js_code_for_persistent_cookie_init = """(web_cookie_cache, cookie) => {
 # 详见 themes/common.js
 js_code_reset = """
 (a,b,c)=>{
+    let stopButton = document.getElementById("elem_stop");
+    stopButton.click();
     return reset_conversation(a,b);
 }
 """