Fix catalog map navigation and hover interactions

- Add @select handler to hubs/index.vue and suppliers/index.vue
  for map click navigation
- Add hoveredId props to final pages for point highlighting
  on card hover
- Add "Выберите источник" hint on final pages with sources

app/pages/catalog/suppliers/[supplierId]/[productId]/[hubId].vue

@@ -5,6 +5,8 @@
     with-map
     map-id="supplier-route-map"
     point-color="#10b981"
+    :hovered-id="hoveredPointUuid"
+    @update:hovered-id="hoveredPointUuid = $event"
   >
     <template #searchBar>
       <CatalogSearchBar
@@ -89,6 +91,7 @@ const product = ref<{ uuid: string; name: string } | null>(null)
 const hub = ref<any>(null)
 const sourceLocation = ref<{ uuid: string; name: string; latitude?: number; longitude?: number } | null>(null)
 const routeData = ref<any>(null)
+const hoveredPointUuid = ref<string>()
 
 const supplierId = computed(() => routeRef.params.supplierId as string)
 const productId = computed(() => routeRef.params.productId as string)