chore: upgrade to TypeScript 7

[wewelll]

Summary

• run builds and project checks with the TypeScript 7.0.2 native compiler
• keep the TypeScript 6 compatibility API available for ESLint, docgen, and other API-based tools
• migrate removed compiler options and align TypeScript tooling, TSTyche configuration, pnpm 11, and build approvals

Verification

• pnpm install --frozen-lockfile
• pnpm build
• pnpm lint
• pnpm check
• pnpm circular
• pnpm test -- --run (57 tests passed)

Notes

• pnpm test-types has no matching files for the existing packages/*/dtslint/**/*.tst.* pattern.