czh-20260626-发起人筛选改成单选组件；修复选择用户后不回显的问题

src/components/semri/singleDeptUserComponent/SzSingleDeptUserSelect.vue

@@ -59,12 +59,14 @@ const props = withDefaults(
     departId?: string;
     role?: string | number;
     isSpecial?: number;
+    checkedUser?: UserItem | null;
   }>(),
   {
     secLevel: 0,
     departId: '',
     role: 1,
     isSpecial: 0,
+    checkedUser: undefined,
   }
 );
 
@@ -145,6 +147,14 @@ watch(
   }
 );
 
+watch(
+  () => props.checkedUser,
+  (user) => {
+    selectedUser.value = user || null;
+  },
+  { immediate: true }
+);
+
 function initData() {
   const depId = props.departId;
   if (depId) {