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/chains/definitions/sepolia.ts

@@ -0,0 +1,30 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const sepolia = /*#__PURE__*/ defineChain({
+  id: 11_155_111,
+  name: 'Sepolia',
+  nativeCurrency: { name: 'Sepolia Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://11155111.rpc.thirdweb.com'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Etherscan',
+      url: 'https://sepolia.etherscan.io',
+      apiUrl: 'https://api-sepolia.etherscan.io/api',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0xca11bde05977b3631167028862be2a173976ca11',
+      blockCreated: 751532,
+    },
+    ensUniversalResolver: {
+      address: '0xeeeeeeee14d718c2b47d9923deab1335e144eeee',
+      blockCreated: 8_928_790,
+    },
+  },
+  testnet: true,
+})