Fix UI issues: 3 columns, SubNav label, back button, sticky map, hover flyTo

- Homepage roles section now shows 3 columns on medium screens
- SubNavigation catalog offers label changed to "Предложения"
- Removed back button from catalog/offers page
- ListMapLayout: sticky map with full height
- ListMapLayout: hover on card flies to location on map

app/components/navigation/SubNavigation.vue

@@ -25,7 +25,7 @@ const { t } = useI18n()
 
 const sectionItems = computed(() => ({
   catalog: [
-    { label: t('cabinetNav.offers'), path: '/catalog/offers' },
+    { label: 'Предложения', path: '/catalog/offers' },
     { label: t('cabinetNav.suppliers'), path: '/catalog/suppliers' },
     { label: t('cabinetNav.hubs'), path: '/catalog/hubs' },
   ],