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/sophonTestnet.ts

@@ -0,0 +1,33 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+import { chainConfig } from '../../zksync/chainConfig.js'
+
+export const sophonTestnet = /*#__PURE__*/ defineChain({
+  ...chainConfig,
+  blockTime: 200,
+  id: 531_050_104,
+  name: 'Sophon Testnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'Sophon',
+    symbol: 'SOPH',
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://rpc.testnet.sophon.xyz'],
+      webSocket: ['wss://rpc.testnet.sophon.xyz/ws'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Sophon Block Explorer',
+      url: 'https://explorer.testnet.sophon.xyz',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0x83c04d112adedA2C6D9037bb6ecb42E7f0b108Af',
+      blockCreated: 15_642,
+    },
+  },
+  testnet: true,
+})