fix: 选择组织时增加搜索功能

 <template>
-  <a-tree-select v-bind="getAttrs" @change="handleChange">
+  <a-tree-select
+    v-bind="getAttrs"
+    @change="handleChange"
+    :showSearch="true"
+    :filterTreeNode="filterTreeNode"
+  >
     <template #[item]="data" v-for="item in Object.keys($slots)">
       <slot :name="item" v-bind="data || {}"></slot>
     </template>
@@ -60,6 +65,18 @@
         props.immediate && fetch();
       });
 
+      function filterTreeNode(value, options) {
+        const { props } = options || {};
+
+        if (!value) {
+          return true;
+        }
+        let { name } = props || {};
+        value = value.toLowerCase();
+        name = name.toLowerCase();
+        return name.includes(value);
+      }
+
       async function fetch() {
         const { api } = props;
         if (!api || !isFunction(api)) return;
@@ -80,7 +97,7 @@
         isFirstLoaded.value = true;
         emit('options-change', treeData.value);
       }
-      return { getAttrs, loading, handleChange };
+      return { getAttrs, loading, handleChange, filterTreeNode };
     },
   });
 </script>