fix(admin-web): replace inline multi-statement @cancel handler

Prettier with semi:false stripped the semicolons that previously separated
the two inline statements, leaving the Vue compiler unable to parse the
expression. Extract closeItemModal() and bind the handler by reference.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/admin-web/src/views/KnowledgeView.vue

@@ -437,6 +437,11 @@ function resetItemForm(): void {
   itemSourceType.value = 'document'
 }
 
+function closeItemModal(): void {
+  itemModalOpen.value = false
+  resetItemForm()
+}
+
 function handleTreeSelect(keys: (string | number)[]): void {
   if (!keys.length) {
     return
@@ -688,10 +693,7 @@ function closeItemDetail(): void {
       :ok-button-props="itemModalOkButtonProps"
       :cancel-button-props="{ style: { width: '80px', borderRadius: '4px' } }"
       @ok="itemMutation.mutate()"
-      @cancel="
+      @cancel="closeItemModal"
-        itemModalOpen = false
-        resetItemForm()
-      "
     >
       <div class="knowledge-form-add">
         <div class="knowledge-type-row">