Fix map positioning when search bar is present

Use dynamic mapTopClass/mapHeightClass based on searchBar slot:
- With searchBar: top-44 (176px), height calc(100vh-12rem)
- Without searchBar: top-32 (128px), height calc(100vh-9rem)

app/components/page/CatalogPage.vue

@@ -213,9 +213,11 @@ const props = withDefaults(defineProps<{
   totalCount: 0
 })
 
-// Map positioning - unified height for all pages with map
-const mapTopClass = 'top-32'
-const mapHeightClass = 'h-[calc(100vh-9rem)]'
+// Map positioning - dynamic based on search bar presence
+const slots = useSlots()
+const hasSearchBar = computed(() => !!slots.searchBar)
+const mapTopClass = computed(() => hasSearchBar.value ? 'top-44' : 'top-32')
+const mapHeightClass = computed(() => hasSearchBar.value ? 'h-[calc(100vh-12rem)]' : 'h-[calc(100vh-9rem)]')
 
 const emit = defineEmits<{
   'select': [item: MapItem]