chore: add comment to explain export in QCS

src/index.js

@@ -108,6 +108,8 @@ export default {
   async getContextMenu (obj, menu) {
     const app = qlik.currApp(this);
     const isPersonalResult = await app.global.isPersonalMode();
+    // This check is done because the desktop wrapper blocks downloads. 
+    // It also blocks this feature in QCS currently as isPersonalMode returns true
     if (
       !this.$scope.layout.allowexportxls ||
       (isPersonalResult && isPersonalResult.qReturn)