fix: resolve failing tests and type errors across monorepo

[stooit]

Summary

Fixes all 5 failing tests and the 1 outstanding tsc --noEmit error across the monorepo. The bugs spanned package boundaries (packages/utils → apps/web) as well as in-component logic and accessibility/formatting concerns.

Final state: bun run test → 13/13 pass · npx tsc --noEmit → 0 errors.

Fixes

File	Bug	Fix
apps/web/src/lib/api.ts	Imported useThrottle, which @e2e/utils no longer exports (hook was renamed to useDebounce) — caused TS2305 + 2 failing api module tests	Import useDebounce and re-export it as useSearchDebounce
packages/utils/src/format/date.ts	Produced zero-padded day-first (01/03/2024); test expects non-padded en-AU style (1/03/2024)	Switched to en-AU short date formatting (day-first, non-padded day)
packages/ui/src/components/Button/Button.tsx	Icon-only button had no accessible name — aria-label not wired through	Wire aria-label so icon-only buttons expose an accessible name
packages/ui/src/components/DataTable/DataTable.tsx	Stale-closure bug caught by a controlled re-render test	Use a functional state updater so the latest state is read on toggle
tsconfig.json	tsc could not resolve the bun:test module in test files	Added bun-types to compiler types (resolution only — no loosening of strictness)

Constraints honoured

• ✅ No test files modified
• ✅ No new dependencies added
• ✅ Only source required by the tests was changed
• ✅ Fixes are general (not hard-coded to the test inputs)

Verification

• Independently re-ran bun run test (13/13 pass, exit 0) and npx tsc --noEmit (0 errors, exit 0) after the changes.
• Diff reviewed by the review subagent: no blockers; the tsconfig.json change confirmed to be a minimal resolution fix that does not weaken type safety.

Assumptions

• The renamed hook is useDebounce (inferred from the utils export surface and the useSearchDebounce re-export the test asserts).
• The expected date format is en-AU day-first with a non-padded day, per the formatDate test expecting /^1/ for 1 March 2024.