feat(web): Focus on combo box input when opening add tag modal (#18923)

- Add forceFocus prop to ComboBox (optional, false)
- Set forceFocus on AssetTagModal combobox

web/src/lib/modals/AssetTagModal.svelte

@@ -66,6 +66,7 @@
           defaultFirstOption
           options={allTags.map((tag) => ({ id: tag.id, label: tag.value, value: tag.id }))}
           placeholder={$t('search_tags')}
+          forceFocus
         />
       </div>
     </form>