import { Api } from "https://dotland.deno.dev/x/grammy@v1.15.0/mod.ts";
Use this method to decline a chat join request. The bot must be an administrator in the chat for this to work and must have the can_invite_users administrator right. Returns True on success.
Parameters
Unique identifier for the target chat or username of the target channel (in the format @channelusername)
Optional AbortSignal to cancel the request
Official reference: https://core.telegram.org/bots/api#declinechatjoinrequest