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/map/delete-all.js

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+'use strict';
+module.exports = require('../../full/map/delete-all');

node_modules/core-js/features/map/emplace.js

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

node_modules/core-js/features/map/every.js

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

node_modules/core-js/features/map/filter.js

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

node_modules/core-js/features/map/find-key.js

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+'use strict';
+module.exports = require('../../full/map/find-key');

node_modules/core-js/features/map/find.js

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

node_modules/core-js/features/map/from.js

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

node_modules/core-js/features/map/get-or-insert-computed.js

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+'use strict';
+module.exports = require('../../full/map/get-or-insert-computed');

node_modules/core-js/features/map/get-or-insert.js

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+'use strict';
+module.exports = require('../../full/map/get-or-insert');

node_modules/core-js/features/map/group-by.js

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+'use strict';
+module.exports = require('../../full/map/group-by');

node_modules/core-js/features/map/includes.js

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

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

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

node_modules/core-js/features/map/key-by.js

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+'use strict';
+module.exports = require('../../full/map/key-by');

node_modules/core-js/features/map/key-of.js

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+'use strict';
+module.exports = require('../../full/map/key-of');

node_modules/core-js/features/map/map-keys.js

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+'use strict';
+module.exports = require('../../full/map/map-keys');

node_modules/core-js/features/map/map-values.js

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+'use strict';
+module.exports = require('../../full/map/map-values');

node_modules/core-js/features/map/merge.js

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

node_modules/core-js/features/map/of.js

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

node_modules/core-js/features/map/reduce.js

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

node_modules/core-js/features/map/some.js

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

node_modules/core-js/features/map/update-or-insert.js

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+'use strict';
+module.exports = require('../../full/map/update-or-insert');

node_modules/core-js/features/map/update.js

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

node_modules/core-js/features/map/upsert.js

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