chore: add network/host unreachable error codes

Author: trivikr

packages/service-error-classification/src/constants.ts

@@ -54,4 +54,4 @@ export const NODEJS_TIMEOUT_ERROR_CODES = ["ECONNRESET", "ECONNREFUSED", "EPIPE"
 /**
  * Node.js system error codes that indicate network error.
  */
-export const NODEJS_NETWORK_ERROR_CODES = ["ENOTFOUND"];
+export const NODEJS_NETWORK_ERROR_CODES = ["EHOSTUNREACH", "ENETUNREACH", "ENOTFOUND"];