fix(select): handle async option creation in creatable mode

[Copilot]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

https://github.com/Tencent/tdesign-vue-next/issues/6228

💡 需求背景和解决方案

When using creatable mode with an async onCreate callback (e.g., setTimeout to validate with backend), the component crashes because getSelectedOptions() is called before the option exists in optionsList.

<t-select
  v-model="value"
  creatable
  filterable
  :options="options"
  @create="(val) => {
    // Async validation causes error
    setTimeout(() => {
      options.push({ label: val, value: val });
    }, 100);
  }"
/>

Fix: When createAble is true, construct the option object directly from props instead of calling getSelectedOptions():

const createdOption = { value: props.value, label: labelText.value };

This ensures onChange receives valid option data regardless of async callback timing.

Test case: Added test case under describe('@event', ...) section with proper naming describe('onCreate #6228', ...), following the repository test format standards used by other event tests like onClear and onChange.

📝 更新日志

• 本条 PR 不需要纳入 Changelog

tdesign-vue-next

• fix(select): 修复 creatable 模式下使用异步 onCreate 回调时报错的问题

@tdesign-vue-next/chat

@tdesign-vue-next/auto-import-resolver

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• Changelog 已提供或无须提供

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[select] 新增选项时报错</issue_title>
<issue_description>### tdesign-vue-next 版本

最新版本

重现链接

https://stackblitz.com/edit/cph2gsoe?file=src%2Fdemo.vue

重现步骤

新增选项的时候 如果不加定时器是可以的 加上定时器 是因为需要询问后端 这个是否可添加 但是这样就会造成添加错误 导致控制台报错

期望结果

No response

实际结果

No response

框架版本

No response

浏览器版本

No response

系统版本

No response

Node版本

20.10.0

补充说明

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [select] 新增选项时报错 #5185

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[liweijie0812]

@copilot 测试案例格式根据仓库规范来，可以参考form的

[Copilot]

@copilot 测试案例格式根据仓库规范来，可以参考form的

Updated the test case format to follow repository standards in commit f059dda. The test is now nested under describe('@event', ...) with proper naming describe('onCreate #6228', ...), matching the pattern used by other event tests like onClear and onChange.

[pkg-pr-new]

tdesign-vue-next-demo

npm i https://pkg.pr.new/Tencent/tdesign-vue-next/@tdesign-vue-next/auto-import-resolver@6200

npm i https://pkg.pr.new/Tencent/tdesign-vue-next@6200

npm i https://pkg.pr.new/Tencent/tdesign-vue-next/@tdesign-vue-next/chat@6200

commit: f059dda

[tdesign-bot]

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