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/lib0/dist/symbol-9c439012.cjs

@@ -0,0 +1,29 @@
+'use strict';
+
+/**
+ * Utility module to work with EcmaScript Symbols.
+ *
+ * @module symbol
+ */
+
+/**
+ * Return fresh symbol.
+ */
+const create = Symbol;
+
+/**
+ * @param {any} s
+ * @return {boolean}
+ */
+const isSymbol = s => typeof s === 'symbol';
+
+var symbol = /*#__PURE__*/Object.freeze({
+	__proto__: null,
+	create: create,
+	isSymbol: isSymbol
+});
+
+exports.create = create;
+exports.isSymbol = isSymbol;
+exports.symbol = symbol;
+//# sourceMappingURL=symbol-9c439012.cjs.map