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/sapphireTestnet.ts

@@ -0,0 +1,21 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const sapphireTestnet = /*#__PURE__*/ defineChain({
+  id: 23295,
+  name: 'Oasis Sapphire Testnet',
+  network: 'sapphire-testnet',
+  nativeCurrency: { name: 'Sapphire Test Rose', symbol: 'TEST', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://testnet.sapphire.oasis.dev'],
+      webSocket: ['wss://testnet.sapphire.oasis.dev/ws'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Oasis Explorer',
+      url: 'https://explorer.oasis.io/testnet/sapphire',
+    },
+  },
+  testnet: true,
+})