chore: migrate blocksuite test (#9222)

blocksuite/framework/block-std/package.json

@@ -20,6 +20,7 @@
     "@lit/context": "^1.1.2",
     "@preact/signals-core": "^1.8.0",
     "@types/hast": "^3.0.4",
+    "dompurify": "^3.1.6",
     "fractional-indexing": "^3.2.0",
     "lib0": "^0.2.97",
     "lit": "^3.2.0",