Fix storybook tests

[thomtrp]

As title

[greptile-apps]

PR Summary

The pull request 'Fix storybook tests' includes changes to multiple Storybook test files to improve test reliability and consistency.

• packages/twenty-front/src/loading/components/__stories__/PrefetchLoading.stories.tsx: Removed PrefetchLoadingDecorator and updated assertions to check for the presence of text elements.
• packages/twenty-front/src/modules/command-menu/components/__stories__/CommandMenu.stories.tsx: Reordered imports, removed unused mocks, and updated test scenarios.
• packages/twenty-front/src/modules/object-metadata/components/__stories__/ObjectMetadataNavItems.stories.tsx: Added PrefetchLoadedDecorator to ensure prefetch states are set.
• packages/twenty-front/src/modules/settings/data-model/fields/preview/components/__stories__/SettingsDataModelFieldPreviewCard.stories.tsx: Renamed 'Link' story to 'Links' and updated field type.
• packages/twenty-front/src/testing/decorators/PrefetchLoadedDecorator.tsx: Introduced a new decorator to set prefetch states for views and favorites using Recoil.

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