feat(tools): migrates ShowSearchObjectModal to React 19

[hodanoori]

Summary

Migrates ShowSearchObjectModal in the universal search plugin from a legacy React class component to a modern functional component with TypeScript, as part of the React 19 migration epic (#1774). The component renders a modal with tabbed content for a searched object and is now fully typed, free of deprecated
lifecycle methods, and covered by Vitest tests.

Changes Made

• Deleted show.jsx — replaced entirely by the TypeScript implementation
• Added show.tsx — functional component using useState/useEffect hooks:
  • componentDidMount replaced with useEffect(() => {}, []) for the initial item fetch
  • UNSAFE_componentWillReceiveProps replaced with useEffect([item]) to reset loading state when the item arrives
  • hide + restoreUrl merged into a single close function
  • TypeScript interfaces defined for Item, AggregatesState, Match, History, and ShowSearchObjectModalProps
  • declare global { var policy } added to handle the Rails-injected policy global
  • Spinner and JsonViewer sourced from @cloudoperators/juno-ui-components; Modal, Button, Tabs, Tab kept from react-bootstrap (Juno Modal requires AppShellProvider which is not present in the tools plugin)
• Added show.test.tsx — comprehensive Vitest test suite covering:
  • Initial rendering and modal visibility
  • Loading state: spinner shown, load called on mount, cleared on item arrival
  • Error state: error message shown on rejected load
  • All conditional tabs based on cached_object_type and policy.isAllowed
  • Active tab from ?tab= query param and userRoles→data reset for domain items
  • Footer links rendered when helpers return values
  • Close behaviour: history.replace and history.goBack navigation
• Updated app/javascript/react-bootstrap.d.ts — added Tabs and Tab type declarations

Related Issues

• Closes [Task](universal-search): Migrate tools/universal_search/search/components/show.jsx #1963: Migrate tools/universal_search/search/components/show.jsx
• Part of [EPIC](react-19): Upgrade to React 19 #1774: Complete React 19 Migration — Remaining Components

Screenshots (if applicable)

Checklist

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• I have made corresponding changes to the documentation (if applicable).
• My changes generate no new warnings or errors.