Display cancellation reason ELSE delay reason... there is no need to display both if the train is cancelled!

src/lib/components/ui/station-board/StaffServicesGrid.svelte

@@ -152,8 +152,7 @@
 						{/if}
 					</td>
 				</tr>
-			{/if}
-			{#if service.dr?.r}
+			{:else if service.dr?.r}
 				<tr class="delay-row" in:fade={{ duration: 150, delay: 150 }} out:fade={{ duration: 150 }}>
 					<td colspan="9">
 						{service.dr.r}