fix: normalize abort signals for telegram fetch

src/infra/fetch.ts

@@ -0,0 +1,29 @@
+export function wrapFetchWithAbortSignal(fetchImpl: typeof fetch): typeof fetch {
+  return (input: RequestInfo | URL, init?: RequestInit) => {
+    const signal = init?.signal;
+    if (!signal) return fetchImpl(input, init);
+    if (typeof AbortSignal !== "undefined" && signal instanceof AbortSignal) {
+      return fetchImpl(input, init);
+    }
+    if (typeof AbortController === "undefined") {
+      return fetchImpl(input, init);
+    }
+    if (typeof signal.addEventListener !== "function") {
+      return fetchImpl(input, init);
+    }
+    const controller = new AbortController();
+    const onAbort = () => controller.abort();
+    if (signal.aborted) {
+      controller.abort();
+    } else {
+      signal.addEventListener("abort", onAbort, { once: true });
+    }
+    const response = fetchImpl(input, { ...init, signal: controller.signal });
+    if (typeof signal.removeEventListener === "function") {
+      void response.finally(() => {
+        signal.removeEventListener("abort", onAbort);
+      });
+    }
+    return response;
+  };
+}