fix(infra): also wire gaxios-fetch-compat shim into src/index.ts (gateway entry)

src/index.ts

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+import "./infra/gaxios-fetch-compat.js";
 import process from "node:process";
 import { fileURLToPath } from "node:url";
 import { formatUncaughtError } from "./infra/errors.js";