test(api): set server origin for API tests

vitest.config.ts

@@ -7,6 +7,9 @@ const rootDir = dirname(fileURLToPath(import.meta.url))
 export default defineConfig({
   test: {
     environment: "node",
+    env: {
+      INTERNAL_API_ORIGIN: "http://localhost",
+    },
     include: ["tests/**/*.test.ts"],
   },
   resolve: {