feat(designer): Migrate delete node modal to fluent v9

[ccastrotrejo]

This pull request includes several changes to improve the user interface and functionality of modal dialogs and card components, as well as adding new tests. The most important changes include updating the DeleteNodeModal component to use the Dialog component from @fluentui/react-components, adding a focus restoration feature to card components, and introducing new tests for the DeleteNodeModal.

• Updated to use Dialog and related components from @fluentui/react-components, added loading state messages, and implemented a callback for closing the dialog.
• Added new tests for DeleteNodeModal to verify its behavior and ensure proper rendering of titles, body messages, and spinner states.
• Added snapshot tests for DeleteNodeModal to ensure consistent rendering.
• Removed unnecessary styles related to the old modal implementation.
• Imported and used useRestoreFocusTarget to add focus restoration attributes to the Card component.
• Imported and used useRestoreFocusTarget to add focus restoration attributes to the ScopeCard component.

Fixes #5273

Screenshots

Old version

New version

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• Localize/lang/strings.json: Language not supported
• libs/designer-ui/src/lib/modals/test/snapshots/DeleteNodeModal.spec.tsx.snap: Language not supported
• libs/designer-ui/src/lib/modals/styles.less: Language not supported