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/buffer.d.ts

@@ -0,0 +1,22 @@
+export function createUint8ArrayFromLen(len: number): Uint8Array<ArrayBuffer>;
+export function createUint8ArrayViewFromArrayBuffer(buffer: ArrayBuffer, byteOffset: number, length: number): Uint8Array<ArrayBuffer>;
+export function createUint8ArrayFromArrayBuffer(buffer: ArrayBuffer): Uint8Array<ArrayBuffer>;
+/**
+ * @param {Uint8Array} bytes
+ * @return {string}
+ */
+export function toBase64(bytes: Uint8Array): string;
+/**
+ * @param {string} s
+ * @return {Uint8Array<ArrayBuffer>}
+ */
+export function fromBase64(s: string): Uint8Array<ArrayBuffer>;
+export function toBase64UrlEncoded(buf: Uint8Array): string;
+export function fromBase64UrlEncoded(base64: string): Uint8Array<ArrayBuffer>;
+export function toHexString(buf: Uint8Array): string;
+export function fromHexString(hex: string): Uint8Array<ArrayBuffer>;
+export function copyUint8Array(uint8Array: Uint8Array): Uint8Array;
+export function encodeAny(data: any): Uint8Array;
+export function decodeAny(buf: Uint8Array): any;
+export function shiftNBitsLeft(bs: Uint8Array, N: number): Uint8Array<ArrayBufferLike>;
+//# sourceMappingURL=buffer.d.ts.map