feat: Add modal to view full failover event

[adhityamamallan]

Summary

Add modal for viewing an individual failover event, which is shown when "See more" in the table is clicked

Test plan

Unit tests + ran locally.

With Primary cluster failover

With cluster attributes (more are shown on scroll)

[Copilot]

Pull Request Overview

This PR adds a failover history modal component to display detailed failover information, including ID, timestamp, and cluster transitions organized by scope and attribute. The modal is integrated into the existing domain page failover active-active view and is triggered by clicking a "See more" button.

• New DomainPageFailoverModal component with comprehensive styling and test coverage
• Integration with DomainPageFailoverActiveActive component using React state management
• Display of failover information in a structured table format with cluster transition visualization

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
domain-page-failover-modal.types.ts	Type definitions for the modal component props
domain-page-failover-modal.tsx	Modal component implementation with table display and formatted data
domain-page-failover-modal.styles.ts	Styled components and BaseUI overrides for modal appearance
domain-page-failover-modal.test.tsx	Comprehensive unit tests for modal component behavior
domain-page-failover-active-active.tsx	Integration of modal with state management and button click handler
domain-page-failover-active-active.test.tsx	Updated tests to verify modal component is rendered

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