chore(deps): retire Babel 6 and patch Babel 7

[infeng]

Jest 23 installs Babel 6, which has no patch for the critical traversal-code-execution advisory. Both build fixtures also lock vulnerable Babel 7 traversal versions. Move the Jest/babel-jest/ts-jest adapters to their compatible Jest 24 versions and update Babel core to 7.29.7 in both installs, resolving traversal to 7.29.8. This removes Babel 6 and targets Dependabot alerts #163, #145 and #146.

Update ts-jest's configuration key and explicitly load Jest types for tests. Limit ambient TypeScript types to the repository's Node, React and Jest types so newer build-tool-only Babel declarations are not parsed by the existing TypeScript 3 compiler. Application source, TypeScript/React/webpack versions and public props remain unchanged.

Validation:

• Clean public-registry install; npm run verify passed: all 42 regression tests, lint, library/types/demo/SSR builds, default-export and hydration checks, and package dry run.
• Chrome 149: demo open/zoom/rotation/flip/navigation/close/inline mode and server HTML + interactive SSR hydration passed with no page errors.
• Both lockfiles contain no babel-traverse; every @babel/traverse is 7.29.8. Public-only registry and git diff --check checks passed.
• Rebasing onto the merged parent batch preserved the exact tested tree.

Upstream advisory and Babel 6 patch status. Jest 24 is a bounded migration to remove this critical dependency; further test-tool modernization remains separate maintenance work.