Perf: offload Telegram CIDR fetching into separate thread

Build/lib/fetch-retry.ts

@@ -177,6 +177,8 @@ export async function $$fetch(url: string, init: RequestInit = defaultRequestIni
   }
 }
 
+export const fetch = $$fetch;
+
 /** @deprecated -- undici.requests doesn't support gzip/br/deflate, and has difficulty w/ undidi cache */
 export async function requestWithLog(url: string, opt?: Parameters<typeof undici.request>[1]) {
   try {