fix: use SeriesSortName in SortBy

`SeriesName` is not a valid value for `SortBy`.

src/controllers/favorites.js

@@ -133,7 +133,7 @@ function getFetchDataFn(section) {
     return function () {
         const apiClient = this.apiClient;
         const options = {
-            SortBy: 'SeriesName,SortName',
+            SortBy: 'SeriesSortName,SortName',
             SortOrder: 'Ascending',
             Filters: 'IsFavorite',
             Recursive: true,

src/controllers/list.js

@@ -1058,7 +1058,7 @@ class ItemsView {
         if (params.type === 'Episode') {
             return {
                 name: globalize.translate('Name'),
-                value: 'SeriesName,SortName'
+                value: 'SeriesSortName,SortName'
             };
         }