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/contracts.ts

@@ -0,0 +1,18 @@
+import type { Chain } from '../types/chain.js'
+
+/**
+ * Predeploy contracts for OP Stack.
+ * @see https://github.com/ethereum-optimism/optimism/blob/develop/specs/predeploys.md
+ */
+export const contracts = {
+  gasPriceOracle: { address: '0x420000000000000000000000000000000000000F' },
+  l1Block: { address: '0x4200000000000000000000000000000000000015' },
+  l2CrossDomainMessenger: {
+    address: '0x4200000000000000000000000000000000000007',
+  },
+  l2Erc721Bridge: { address: '0x4200000000000000000000000000000000000014' },
+  l2StandardBridge: { address: '0x4200000000000000000000000000000000000010' },
+  l2ToL1MessagePasser: {
+    address: '0x4200000000000000000000000000000000000016',
+  },
+} as const satisfies Chain['contracts']