remove non-general default value for placement

Author: wxiaoguang

web_src/js/features/contextpopup.js

@@ -30,6 +30,7 @@ export function initContextPopups() {
 
     createTippy(this, {
       content: el,
+      placement: 'top-start',
       interactive: true,
       interactiveBorder: 5,
       onShow: () => {

web_src/js/modules/tippy.js

@@ -3,7 +3,6 @@ import tippy from 'tippy.js';
 export function createTippy(target, opts = {}) {
   const instance = tippy(target, {
     appendTo: document.body,
-    placement: 'top-start',
     animation: false,
     allowHTML: false,
     hideOnClick: false,