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/actual/reflect/apply.js

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+'use strict';
+var parent = require('../../stable/reflect/apply');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/construct.js

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+'use strict';
+var parent = require('../../stable/reflect/construct');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/define-property.js

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+'use strict';
+var parent = require('../../stable/reflect/define-property');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/delete-property.js

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+'use strict';
+var parent = require('../../stable/reflect/delete-property');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/get-own-property-descriptor.js

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+'use strict';
+var parent = require('../../stable/reflect/get-own-property-descriptor');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/get-prototype-of.js

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+'use strict';
+var parent = require('../../stable/reflect/get-prototype-of');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/get.js

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+'use strict';
+var parent = require('../../stable/reflect/get');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/has.js

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+'use strict';
+var parent = require('../../stable/reflect/has');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/index.js

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+'use strict';
+var parent = require('../../stable/reflect');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/is-extensible.js

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+'use strict';
+var parent = require('../../stable/reflect/is-extensible');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/own-keys.js

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+'use strict';
+var parent = require('../../stable/reflect/own-keys');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/prevent-extensions.js

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+'use strict';
+var parent = require('../../stable/reflect/prevent-extensions');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/set-prototype-of.js

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+'use strict';
+var parent = require('../../stable/reflect/set-prototype-of');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/set.js

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+'use strict';
+var parent = require('../../stable/reflect/set');
+
+module.exports = parent;

node_modules/core-js/actual/reflect/to-string-tag.js

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+'use strict';
+require('../../modules/es.reflect.to-string-tag');
+
+module.exports = 'Reflect';