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/@eslint/eslintrc/lib/index-universal.js

@@ -0,0 +1,29 @@
+/**
+ * @fileoverview Package exports for @eslint/eslintrc
+ * @author Nicholas C. Zakas
+ */
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+import * as ConfigOps from "./shared/config-ops.js";
+import ConfigValidator from "./shared/config-validator.js";
+import * as naming from "./shared/naming.js";
+import environments from "../conf/environments.js";
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+const Legacy = {
+    environments,
+
+    // shared
+    ConfigOps,
+    ConfigValidator,
+    naming
+};
+
+export {
+    Legacy
+};