allow default export in vite configuration files

biome.json

@@ -90,6 +90,16 @@
     }
   },
   "overrides": [
+    {
+      "includes": ["**/vite*.config.ts", "vitest*.config.ts"],
+      "linter": {
+        "rules": {
+          "style": {
+            "noDefaultExport": "off"
+          }
+        }
+      }
+    },
     {
       "includes": ["bin/**"],
       "linter": {