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/level-packager/abstract/test.js

@@ -0,0 +1,20 @@
+'use strict'
+
+module.exports = function (test, level, options) {
+  options = options || {}
+
+  require('./base-test')(test, level)
+  require('./db-values-test')(test, level, options.nonPersistent)
+
+  if (!options.skipErrorIfExistsTest) {
+    require('./error-if-exists-test')(test, level)
+  }
+
+  if (!options.skipRepairTest) {
+    require('./repair-test')(test, level)
+  }
+
+  if (!options.skipDestroyTest) {
+    require('./destroy-test')(test, level)
+  }
+}