Refactor: Unify DatasetVisualization into shared component

[Creylay]

Summary

Consolidates two duplicate DatasetVisualization components (one in /components for Notebooks and one in /components/models for Models) into a single shared component with generic props. This reduces code duplication and makes the component reusable across different modules by accepting configurable button text and callback handlers.

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Type of Change

Check all that apply like this [x]:

• Backend change
• Frontend change
• CI / Workflow change
• Build / Packaging change
• Bug fix
• Documentation

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Changes (by file)

Component Consolidation:

• DashAI/front/src/components/DatasetVisualization.jsx: Updated to use generic prop names (onItemCreated, onNewItem, newItemButtonText, existingItems) instead of notebook-specific names, making it reusable across modules
• DashAI/front/src/components/models/DatasetVisualization.jsx: Removed (duplicate component deleted)

Integration Updates:

• DashAI/front/src/pages/models/ModelsContent.jsx: Updated import to use shared DatasetVisualization component from /components with newItemButtonText="New Session" prop
• Fixed typo: onNewNotebok → onNewNotebook

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Testing

1. Notebooks module: Verify that "New Notebook" button works correctly on dataset visualization page
2. Models module: Verify that "New Session" button works correctly on dataset visualization page (step 2)
3. Confirm both modules display dataset information, quality scores, and tabs correctly
4. Test button states (disabled when dataset is processing)
5. Verify tour functionality still works in both contexts

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Notes

• The shared component maintains all original functionality while accepting customizable props for different use cases
• Default prop values ensure backward compatibility
• This change reduces maintenance overhead by having a single source of truth for dataset visualization UI
• Future modules can easily reuse this component by providing custom button text and handlers