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/tempo/Hardfork.ts

@@ -0,0 +1,17 @@
+export const hardforks = [
+  'genesis',
+  't0',
+  't1',
+  't1a',
+  't1b',
+  't1c',
+  't2',
+  't3',
+] as const
+
+export type Hardfork = (typeof hardforks)[number]
+
+/** Returns `true` if `current` is before `target`. */
+export function lt(current: string, target: Hardfork): boolean {
+  return hardforks.indexOf(current as Hardfork) < hardforks.indexOf(target)
+}