Fix mediaSize being requested for every group

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/graphql/group.ts

@@ -84,7 +84,6 @@ export const GROUP_FIELDS_FRAGMENTS = gql`
       id
       url
     }
-    mediaSize
     organizedEvents(
       afterDatetime: $afterDateTime
       beforeDatetime: $beforeDateTime
@@ -214,6 +213,7 @@ export const GET_GROUP = gql`
     $organisedEventslimit: Int
   ) {
     getGroup(id: $id) {
+      mediaSize
       ...GroupFullFields
     }
   }