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/fast-stable-stringify/results/libs/IE 9.0.0 (Windows 7 0.0.0).json

@@ -0,0 +1,35 @@
+{
+    "JSON.stringify@native": {
+        "name": "JSON.stringify@native",
+        "browser": "IE 9.0.0 (Windows 7 0.0.0)",
+        "suite": "libs",
+        "hz": 9927.615273483276,
+        "success": true,
+        "fastest": false,
+        "rme": 0.012686011907513476,
+        "rhz": 1.8583624088037056,
+        "sampleSize": 164
+    },
+    "fast-stable-stringify@a9f81e8": {
+        "name": "fast-stable-stringify@a9f81e8",
+        "browser": "IE 9.0.0 (Windows 7 0.0.0)",
+        "suite": "libs",
+        "hz": 5342.1309139986515,
+        "success": true,
+        "fastest": true,
+        "rme": 0.013540097031428645,
+        "rhz": 1,
+        "sampleSize": 146
+    },
+    "json-stable-stringify@1.0.1": {
+        "name": "json-stable-stringify@1.0.1",
+        "browser": "IE 9.0.0 (Windows 7 0.0.0)",
+        "suite": "libs",
+        "hz": 3139.8341435516154,
+        "success": true,
+        "fastest": false,
+        "rme": 0.015201173421442258,
+        "rhz": 0.5877493820535017,
+        "sampleSize": 135
+    }
+}