refactor(JoinFamily): 将family.disable重命名为family.is_kicked以提高可读性

@@ -109,7 +109,7 @@
               @tap="selectFamily(family.id)"
               :class="[
                 'family-item p-4 border rounded-lg flex items-center space-x-3',
-                family.disable
+                family.is_kicked
                   ? 'border-gray-300 bg-gray-100 opacity-60 cursor-not-allowed'
                   : selectedFamilyId === family.id
                     ? 'border-blue-500 bg-blue-50'
@@ -128,7 +128,7 @@
               <view class="flex-1">
                 <view class="font-medium text-gray-900 mb-1">
                   {{ family.name }}
-                  <text v-if="family.disable" class="text-xs text-red-500 ml-2">(被大家长移除后无法再加入)</text>
+                  <text v-if="family.is_kicked" class="text-xs text-red-500 ml-2">(被大家长移除后无法再加入)</text>
                 </view>
                 <view class="text-sm text-gray-600 line-clamp-2">{{ family.note }}</view>
               </view>
@@ -283,7 +283,7 @@ const selectFamily = (familyId) => {
   const family = mockFamilies.value.find(f => f.id === familyId);
 
   // 如果家庭被禁用，则不允许选中
-  if (family && family.disable) {
+  if (family && family.is_kicked) {
     return;
   }