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/promise/withDedupe.ts

@@ -0,0 +1,21 @@
+import { LruMap } from '../lru.js'
+
+/** @internal */
+export const promiseCache = /*#__PURE__*/ new LruMap<Promise<any>>(8192)
+
+type WithDedupeOptions = {
+  enabled?: boolean | undefined
+  id?: string | undefined
+}
+
+/** Deduplicates in-flight promises. */
+export function withDedupe<data>(
+  fn: () => Promise<data>,
+  { enabled = true, id }: WithDedupeOptions,
+): Promise<data> {
+  if (!enabled || !id) return fn()
+  if (promiseCache.get(id)) return promiseCache.get(id)!
+  const promise = fn().finally(() => promiseCache.delete(id))
+  promiseCache.set(id, promise)
+  return promise
+}