Fix CodeMirror extension conflict by pinning @codemirror/state version

- Pin @codemirror/state to version 6.5.2 to resolve version mismatch
- Fixes 'multiple instances of @codemirror/state' error in production builds
- Ensures all CodeMirror packages use consistent state version (6.5.2)
- Resolves instanceof checks failure that breaks CodeMirror functionality

This issue occurs when @codemirror/view depends on a newer version of
@codemirror/state than what's explicitly installed, causing multiple
instances to be bundled and breaking extension compatibility.

package.json

@@ -65,7 +65,7 @@
     "@codemirror/lang-wast": "^6.0.2",
     "@codemirror/language": "^6.10.6",
     "@codemirror/search": "^6.5.8",
-    "@codemirror/state": "^6.4.1",
+    "@codemirror/state": "6.5.2",
     "@codemirror/view": "^6.35.0",
     "@headlessui/react": "^2.2.0",
     "@heroicons/react": "^2.2.0",