Fix sort function to work with Safari

Use localeCompare to compare strings instead of '>' so that arrays
sort as expected in Safari.

Bug: Issue 7057
Change-Id: I9c68e12d25df8c227dfb70c383eca8b2d79a25c5

polygerrit-ui/app/behaviors/gr-access-behavior/gr-access-behavior.html

@@ -143,7 +143,8 @@ limitations under the License.
           value: obj[key],
         };
       }).sort((a, b) => {
-        return a.id > b.id;
+        // Since IDs are strings, use localeCompare.
+        return a.id.localeCompare(b.id);
       });
     },
   };