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/accounts/toMultisigSmartAccount.ts

@@ -0,0 +1,37 @@
+import type { Address } from 'abitype'
+
+import { sign } from '../../accounts/utils/sign.js'
+import type { Hex } from '../../types/misc.js'
+import { concatHex } from '../../utils/index.js'
+import type { ZksyncSmartAccount } from '../types/account.js'
+import { toSmartAccount } from './toSmartAccount.js'
+
+export type ToMultisigSmartAccountParameters = {
+  /** Address of the deployed Account's Contract implementation. */
+  address: Address
+  /** Array of Private Keys belonging to the owners. */
+  privateKeys: readonly Hex[]
+}
+
+/**
+ * Creates a [ZKsync Smart Account](https://docs.zksync.io/build/developer-reference/account-abstraction/building-smart-accounts)
+ * from a Contract Address and an array of Private Keys belonging to the owners.
+ */
+export function toMultisigSmartAccount(
+  parameters: ToMultisigSmartAccountParameters,
+): ZksyncSmartAccount {
+  const { address, privateKeys } = parameters
+
+  return toSmartAccount({
+    address,
+    async sign({ hash }) {
+      return concatHex(
+        await Promise.all(
+          privateKeys.map((privateKey) =>
+            sign({ hash, privateKey, to: 'hex' }),
+          ),
+        ),
+      )
+    },
+  })
+}