Refactor AlignmentEicModel.cs to use a hot observable (spotChromatogramsHot) created with the Publish method. Update various observables and model instances to derive from spotChromatogramsHot instead of spotChromatograms. Add spotChromatogramsHot.Connect() to the Disposables collection for proper resource management.

Converted `_containerOx` to a hot observable using `Publish` and connected it in the `MatchResultCandidatesModel` constructor. Updated `Candidates` property to use `hotContainerOx` and initialize with an empty list as a default value. Added `using` directive for `Reactive.Bindings.Extensions`. Adjusted namespace and class declaration formatting for better readability. Made minor formatting changes to enhance code clarity.

The RefreshUI method calls have been removed for the
originalChromUC, alignedChromUC, and pickingUC objects.
These calls were previously used to refresh the UI for
these instances but are no longer necessary.

Refactored code to use file-scoped namespaces instead of block-scoped namespaces. Updated `namespace` declaration from `namespace CompMs.App.Msdial.Model.DataObj { ... }` to `namespace CompMs.App.Msdial.Model.DataObj;`. Reformatted `AlignedChromatograms` class to align with the new namespace declaration.

Ensure the observable replays the last item to new subscribers
and maintains a single subscription to the underlying sequence.

Introduce FileProp class to encapsulate properties related to AnalysisFileBean, including observable SolidColorBrush and optional RetentionIndexHandler. Update LoadPeakProperty method to use FileProp instances, creating a dictionary cls2brsh for class-to-brush mapping and a list fileProps for structured data management. Replace direct handling of brushes and handlers with FileProp properties for improved code structure and readability.