Function whatsapp_empty_group_list_remedy 

pub fn whatsapp_empty_group_list_remedy(
    group_policy: &WhatsAppChatPolicy,
) -> &'static str

How to restore group access, phrased for the policy actually in force.

Shared rather than duplicated for the same reason as the predicate above: the Web transport’s startup notice and the config validate warning must not offer different remedies for the same configuration.

The ignore arm exists because naming allowed_groups there would be an INEFFECTIVE remedy. A listed group passes the group-identity gate and is then dropped by the chat-type gate, so populating the list changes nothing and the operator has to choose a different policy instead.