fix: commit regenerated ha-modules.d.ts + add sync test

- ha-modules.d.ts: update return types to ShapeFragment (was string)
  to match upstream ShapeFragment safety system changes
- dts-sync.test.ts: add ha-modules.d.ts regeneration check that catches
  drift when module exports/types change but the generator isn't re-run

Signed-off-by: Simon Davies <simongdavies@users.noreply.github.com>

Author: simongdavies