FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/viem/op-stack/chainConfig.ts

@@ -0,0 +1,10 @@
+import { contracts } from './contracts.js'
+import { formatters } from './formatters.js'
+import { serializers } from './serializers.js'
+
+export const chainConfig = {
+  blockTime: 2_000,
+  contracts,
+  formatters,
+  serializers,
+} as const