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/tslib/package.json

@@ -0,0 +1,47 @@
+{
+    "name": "tslib",
+    "author": "Microsoft Corp.",
+    "homepage": "https://www.typescriptlang.org/",
+    "version": "2.8.1",
+    "license": "0BSD",
+    "description": "Runtime library for TypeScript helper functions",
+    "keywords": [
+        "TypeScript",
+        "Microsoft",
+        "compiler",
+        "language",
+        "javascript",
+        "tslib",
+        "runtime"
+    ],
+    "bugs": {
+        "url": "https://github.com/Microsoft/TypeScript/issues"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/Microsoft/tslib.git"
+    },
+    "main": "tslib.js",
+    "module": "tslib.es6.js",
+    "jsnext:main": "tslib.es6.js",
+    "typings": "tslib.d.ts",
+    "sideEffects": false,
+    "exports": {
+        ".": {
+            "module": {
+                "types": "./modules/index.d.ts",
+                "default": "./tslib.es6.mjs"
+            },
+            "import": {
+                "node": "./modules/index.js",
+                "default": {
+                    "types": "./modules/index.d.ts",
+                    "default": "./tslib.es6.mjs"
+                }
+            },
+            "default": "./tslib.js"
+        },
+        "./*": "./*",
+        "./": "./"
+    }
+}