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/@vitest/snapshot/dist/environment-cMiGIVXz.d.ts

@@ -0,0 +1,14 @@
+interface SnapshotEnvironment {
+    getVersion: () => string;
+    getHeader: () => string;
+    resolvePath: (filepath: string) => Promise<string>;
+    resolveRawPath: (testPath: string, rawPath: string) => Promise<string>;
+    saveSnapshotFile: (filepath: string, snapshot: string) => Promise<void>;
+    readSnapshotFile: (filepath: string) => Promise<string | null>;
+    removeSnapshotFile: (filepath: string) => Promise<void>;
+}
+interface SnapshotEnvironmentOptions {
+    snapshotsDirName?: string;
+}
+
+export type { SnapshotEnvironment as S, SnapshotEnvironmentOptions as a };