Fix preferred agent for backup download (#23659)

src/data/backup.ts

@@ -1,16 +1,16 @@
 import { setHours, setMinutes } from "date-fns";
 import type { HassConfig } from "home-assistant-js-websocket";
 import memoizeOne from "memoize-one";
-import { formatTime } from "../common/datetime/format_time";
-import type { LocalizeFunc } from "../common/translations/localize";
-import type { HomeAssistant } from "../types";
-import { domainToName } from "./integration";
-import type { FrontendLocaleData } from "./translation";
 import {
   formatDateTime,
   formatDateTimeNumeric,
 } from "../common/datetime/format_date_time";
+import { formatTime } from "../common/datetime/format_time";
+import type { LocalizeFunc } from "../common/translations/localize";
+import type { HomeAssistant } from "../types";
 import { fileDownload } from "../util/file_download";
+import { domainToName } from "./integration";
+import type { FrontendLocaleData } from "./translation";
 
 export const enum BackupScheduleState {
   NEVER = "never",
@@ -217,10 +217,16 @@ export const uploadBackup = async (
 };
 
 export const getPreferredAgentForDownload = (agents: string[]) => {
-  const localAgents = agents.filter(
-    (agent) => agent.split(".")[0] === "backup"
-  );
-  return localAgents[0] || agents[0];
+  const localAgent = agents.find(isLocalAgent);
+  if (localAgent) {
+    return localAgent;
+  }
+  const networkMountAgent = agents.find(isNetworkMountAgent);
+  if (networkMountAgent) {
+    return networkMountAgent;
+  }
+
+  return agents[0];
 };
 
 export const CORE_LOCAL_AGENT = "backup.local";