fix CTRL+SHIFT+K to toggle open or close when pressed (#6701)

webapp/components/sidebar.jsx

@@ -203,8 +203,12 @@ export default class Sidebar extends React.Component {
 
     handleOpenMoreDirectChannelsModal(e) {
         e.preventDefault();
+        if (this.state.showDirectChannelsModal) {
+            this.hideMoreDirectChannelsModal();
+        } else {
             this.showMoreDirectChannelsModal();
         }
+    }
 
     onChange() {
         if (this.state.currentTeam.id !== TeamStore.getCurrentId()) {