Make publish annotation drop-down show `group` icon for restricted groups

src/sidebar/components/publish-annotation-btn.js

@@ -15,7 +15,7 @@ module.exports = {
     };
 
     this.groupCategory = function () {
-      return this.group.type === 'private' ? 'group' : 'public';
+      return this.group.type === 'open' ? 'public' : 'group';
     };
 
     this.setPrivacy = function (level) {

src/sidebar/components/test/publish-annotation-btn-test.js

@@ -50,7 +50,7 @@ describe('publishAnnotationBtn', function () {
     },
     {
       groupType: 'restricted',
-      expectedIcon: 'public',
+      expectedIcon: 'group',
     },
     {
       groupType: 'private',