fix: resolve cross-package test failures and type errors

[stooit]

Summary

Fixes all 5 failing tests and clears all tsc --noEmit errors across the monorepo (packages/ui, packages/utils, apps/web). Each fix targets the root-cause source bug; no test files were modified and no dependencies were added.

Gate status

• bun run test → 13 pass, 0 fail (5 files)
• tsc --noEmit → 0 errors (exit 0)

Fixes

Package	Bug	Fix
packages/utils	Hook renamed; consumers import useSearchDebounce which was no longer exported (SyntaxError)	Export the hook under the expected useSearchDebounce name from @e2e/utils; updated the apps/web/src/lib/api.ts import site to match
packages/utils	formatDate returned 01/03/2024 (zero-padded day); test expects 1/03/2024	Format string changed to unpadded day + padded month (d/MM/yyyy, en-AU style)
packages/ui	Icon-only Button did not forward aria-label to the rendered <button> (WCAG 4.1.2)	Forward aria-label (and rest a11y props) onto the underlying button element
packages/ui	DataTable stale-closure bug caught by a controlled re-render test	Use functional state update so the handler no longer closes over a stale value
tsconfig.json	Pre-existing Cannot find module 'bun:test' type errors in test files	Added bun-types to compilerOptions.types (config only — already-installed types, no new dependency, no test files touched)

Verification

• Independently re-ran both gates after the fixes — both green.
• Diff reviewed by the review agent: APPROVE — fixes confirmed correct, minimal, root-cause (not test-masking), with no regressions to other call sites.

Assumptions

• Ran the suite via bun run test (the configured script that preloads the happy-dom registrar); plain bun test skips the preload and cannot mount React components.
• The bun:test tsc errors pre-existed on the base commit and appear only in test files; resolved them via the tsconfig types entry rather than editing the forbidden test files.
• useSearchDebounce was treated as the canonical exported name because the test asserts that export exists.