Show a specific error for hs_disabled

src/utils/ErrorUtils.js

@@ -62,6 +62,7 @@ export function messageForSyncError(err) {
             err.data.admin_contact,
             {
                 'monthly_active_user': _td("This homeserver has hit its Monthly Active User limit."),
+                'hs_blocked': _td("This homeserver has been blocked by its administrator."),
                 '': _td("This homeserver has exceeded one of its resource limits."),
             },
         );