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/zksync/actions/getMainContractAddress.ts

@@ -0,0 +1,19 @@
+import type { Address } from 'abitype'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { Account } from '../../types/account.js'
+import type { Chain } from '../../types/chain.js'
+import type { PublicZksyncRpcSchema } from '../types/eip1193.js'
+
+export type GetMainContractAddressReturnType = Address
+
+/* @deprecated Use `getBridgeHubContractAddress` and call `getZKChain(chainId)` instead. */
+export async function getMainContractAddress<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+>(
+  client: Client<Transport, chain, account, PublicZksyncRpcSchema>,
+): Promise<GetMainContractAddressReturnType> {
+  const address = await client.request({ method: 'zks_getMainContract' })
+  return address
+}