fix(a11y): include alias name in delete button aria-label

Screen readers now announce which alias is being deleted, e.g.
"Entfernen de Gruyter" instead of just "Entfernen".

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/routes/persons/[id]/edit/NameHistoryEditCard.svelte

@@ -125,7 +125,7 @@ async function addAlias() {
 						<button
 							type="button"
 							onclick={() => confirmDelete(alias.id)}
-							aria-label={m.person_alias_btn_delete()}
+							aria-label="{m.person_alias_btn_delete()} {alias.lastName}"
 							class="ml-4 inline-flex min-h-[44px] min-w-[44px] items-center justify-center text-red-400 transition-colors hover:text-red-600"
 						>
 							<svg