chore: revert msw back to 1.x

Author: pi0

package.json

@@ -88,7 +88,7 @@
     "monaco-editor": "^0.52.0",
     "mongodb": "^6.10.0",
     "mongodb-memory-server": "^10.1.2",
-    "msw": "^2.6.0",
+    "msw": "^1.3.5",
     "prettier": "^3.3.3",
     "types-cloudflare-worker": "^1.2.0",
     "typescript": "^5.6.3",