Function provide_local_context 

fn provide_local_context(
    active_reply: RwSignal<Option<i64>>,
    approved: RwSignal<Vec<PublicComment>>,
    pending: RwSignal<Vec<PendingComment>>,
    id_scope: &'static str,
)

图鉴用的本地评论上下文：不触达评论接口、不持久化、不允许上传图片。