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/utils/data/isHex.ts

@@ -0,0 +1,13 @@
+import type { ErrorType } from '../../errors/utils.js'
+import type { Hex } from '../../types/misc.js'
+
+export type IsHexErrorType = ErrorType
+
+export function isHex(
+  value: unknown,
+  { strict = true }: { strict?: boolean | undefined } = {},
+): value is Hex {
+  if (!value) return false
+  if (typeof value !== 'string') return false
+  return strict ? /^0x[0-9a-fA-F]*$/.test(value) : value.startsWith('0x')
+}