fix: show latest invoice in billing trend

src/routes/dashboard/billing-trend.svelte

@@ -6,9 +6,11 @@
 
 	let {
 		records,
+		description,
 		formatMoney
 	}: {
 		records: PageData['billingTrend'];
+		description: string;
 		formatMoney: (value: unknown) => string;
 	} = $props();
 
@@ -19,7 +21,7 @@
 <Card.Root>
 	<Card.Header>
 		<Card.Title>Billing trend</Card.Title>
-		<Card.Description>Issued invoice totals over the last six months.</Card.Description>
+		<Card.Description>{description}</Card.Description>
 	</Card.Header>
 	<Card.Content>
 		{#if hasValues}