fix(maps): avoid 404 on keyless Google tiles-token probe (#1066)

Return an uncached unavailable-token response for keyless Google tile-token requests.

Contribution by @dvilrgamerz.

server/standalone/vite.config.js

@@ -5,6 +5,7 @@ import { createBrowserViteConfig } from '../../build/vite.js';
 import { localProviderPlugins } from '../providers/local.js';
 import { localMcpPlugin } from '../mcp/plugin.js';
 import { apiNotFoundPlugin } from './api-not-found.js';
+import { googleTokenUnavailablePlugin } from './google-token-unavailable.js';
 import { standaloneVoiceTools } from './voiceTools.js';
 import { unwatchedRuntimeDirsPlugin } from './unwatched-cache.js';
 
@@ -21,6 +22,7 @@ export default defineConfig(({ command, mode }) => {
     plugins: [
       ...localProviderPlugins({ realtime: { tools }, gemini: { tools } }),
       localMcpPlugin(),
+      googleTokenUnavailablePlugin(),
       apiNotFoundPlugin(),
       unwatchedRuntimeDirsPlugin(),
     ],