fix(telegram): recover from grammY "timed out" long-poll errors (#7239)

grammY getUpdates returns "Request to getUpdates timed out after 500 seconds"
but RECOVERABLE_MESSAGE_SNIPPETS only had "timeout". Since
"timed out".includes("timeout") === false, the error was not classified as
recoverable, causing the polling loop to exit permanently.

Add "timed out" to RECOVERABLE_MESSAGE_SNIPPETS so the polling loop retries
instead of dying silently.

Fixes #7239
Fixes #7255

src/telegram/network-errors.ts

@@ -37,6 +37,7 @@ const RECOVERABLE_MESSAGE_SNIPPETS = [
   "socket hang up",
   "getaddrinfo",
   "timeout", // catch timeout messages not covered by error codes/names
+  "timed out", // grammY getUpdates returns "timed out after X seconds" (not matched by "timeout")
 ];
 
 function normalizeCode(code?: string): string {