fix(contract-manage-change): 修正自动生成结算单问号提示图标位置

- 解决图标夹在开启/关闭 radio 按钮之间，开启按钮右侧多余间距问题
- 清除开启 radio 默认 margin-right，调整提示图标左右间距
- 提示图标紧靠开启按钮一侧，关闭按钮保持较大间距
- 优化样式，使布局更美观一致

src/views/business/contract-manage-change.vue

@@ -219,7 +219,9 @@ export default {
 .attachment-upload .vehicle-attachment-upload { width: auto; }
 .attachment-upload .el-upload { display: inline-flex; }
 .settlement-switch { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
-.settlement-switch-tip { margin: 0 4px; color: #a8abb2; cursor: help; font-size: 14px; }
+// 问号提示图标紧靠「开启」一侧：清掉开启 radio 自带的右间距，图标与「关闭」之间留大间距
+.settlement-switch :deep(.el-radio:first-child) { margin-right: 0; }
+.settlement-switch-tip { margin: 0 32px 0 8px; color: #a8abb2; cursor: help; font-size: 14px; }
 .settlement-form { display: grid; grid-template-columns: repeat(3, minmax(240px, 1fr)); gap: 8px 28px; }
 .change-reason-section { margin: 20px 0; }
 .page-footer {