Try upgrade rspress to fix strict ssg issue

Author: Folyd

package.json

@@ -22,7 +22,7 @@
     "eslint": "^9.19.0",
     "globals": "^15.14.0",
     "prettier": "^3.4.2",
-    "rspress": "^1.42.1",
+    "rspress": "^v2.0.0-alpha.0",
     "typescript-eslint": "^8.22.0"
   },
   "description": "## Setup",