fix: correct tri-state sorting description in documentation and update sortDirection emission behavior

Author: NoOne7135

adminforth/documentation/docs/tutorial/03-Customization/15-afcl.md

@@ -978,7 +978,7 @@ async function loadPageData(data) {
 Table supports column sorting out of the box.
 
 - By default, columns are NOT sortable. Enable sorting per column with `sortable: true`.
-- Clicking a sortable header cycles sorting in a tri‑state order:
+- Clicking a sortable header cycles sorting in a tri-state order:
   - none → ascending → descending → none
   - When it returns to "none", the sorting is cleared.
 

adminforth/spa/src/afcl/Table.vue

@@ -216,7 +216,7 @@
     emit('update:sortField', currentSortField.value);
     emit('update:sortDirection', currentSortField.value ? currentSortDirection.value : undefined);
     emit('sort-change', { field: currentSortField.value, direction: currentSortDirection.value });
-  });
+  }, { immediate: false });
 
   const totalPages = computed(() => {
     return dataResult.value?.total ? Math.ceil(dataResult.value.total / props.pageSize) : 1;