feat: use X icon for vehicle deletion

src/lib/components/lnv/VehicleSelector.svelte

@@ -6,6 +6,7 @@
 		PlusCircleIcon,
 		TractorIcon,
 		TruckIcon,
+		XIcon,
 	} from "@lucide/svelte";
 	import Button, { buttonVariants } from "../ui/button/button.svelte";
 	import {
@@ -74,7 +75,7 @@
 						if(!confirm("Are you sure you want to delete this vehicle? This action cannot be undone.")) return;
 						updateStore({ type: "vehicle", name: vehicle.name }, null);
 					}}>
-						X
+						<XIcon />
 					</Button>
 				</div>
 			{/each}