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/core-js/features/function/bind.js

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+'use strict';
+module.exports = require('../../full/function/bind');

node_modules/core-js/features/function/demethodize.js

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+'use strict';
+module.exports = require('../../full/function/demethodize');

node_modules/core-js/features/function/has-instance.js

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+'use strict';
+module.exports = require('../../full/function/has-instance');

node_modules/core-js/features/function/index.js

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+'use strict';
+module.exports = require('../../full/function');

node_modules/core-js/features/function/is-callable.js

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+'use strict';
+module.exports = require('../../full/function/is-callable');

node_modules/core-js/features/function/is-constructor.js

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+'use strict';
+module.exports = require('../../full/function/is-constructor');

node_modules/core-js/features/function/metadata.js

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+'use strict';
+module.exports = require('../../full/function/metadata');

node_modules/core-js/features/function/name.js

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+'use strict';
+module.exports = require('../../full/function/name');

node_modules/core-js/features/function/un-this.js

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+'use strict';
+module.exports = require('../../full/function/un-this');

node_modules/core-js/features/function/virtual/bind.js

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+'use strict';
+module.exports = require('../../../full/function/virtual/bind');

node_modules/core-js/features/function/virtual/demethodize.js

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+'use strict';
+module.exports = require('../../../full/function/virtual/demethodize');

node_modules/core-js/features/function/virtual/index.js

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+'use strict';
+module.exports = require('../../../full/function/virtual');

node_modules/core-js/features/function/virtual/un-this.js

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+'use strict';
+module.exports = require('../../../full/function/virtual/un-this');