Function dynamic_notification_template_params 

fn dynamic_notification_template_params(
    notification: &Value,
    request: &HttpRequest,
    input_overrides: &BTreeMap<String, Option<String>>,
    action_id: &str,
    entity_id: &str,
    event_kind: &str,
    recipient: &str,
    template_id: &str,
    anchor_record_id: i64,
) -> Value

Builds the flat template-parameter map for one declarative notification row.