能提供更换引擎内部的内置拖拽替身API吗

## **Describe the bug (required)** / **详细描述 bug（必填）**
拖拽替身能否提供替换组件的功能，或者指定拖拽的文案内容
A clear and concise description of what the bug is. / 请提供清晰且精确的 bug 描述
功能需求
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## **To Reproduce (required)** / **如何复现 bug？（必填，非常重要）**

Steps to reproduce the behavior: / 详细复现步骤：

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## **Expected behavior (required)** / **预期行为（必填，非常重要）**
A clear and concise description of what did you expect to happen. / 请清晰和精确的描述你预期的行为
期望可以自己用组件覆盖，或者提供更改文案的API
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## **Screenshots (optional)** / **bug 截图（可选）**
Sceenshots for further information. (If applicable.) / 一些有用的截图将会帮助我们更好的明确以及定位问题

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## **Environments (please complete the following information) (required):** / **请提供如下信息（必填）**
- AliLowCodeEngine version: [e.g. 1.0.0] / 低代码引擎版本
- AliLowCodeEngineExt version: [e.g. 1.0.0] / 低代码引擎扩展包版本
- Browser [e.g. chrome, safari] / 浏览器版本
- materials / plugins / tools / 其他物料 / 插件 / 工具链版本
最新

Start by reviewing the built-in drag-placeholder behavior described in the issue and the attached screenshot, then identify the relevant public entry point in the engine or extension package. Confirm the current engine and extension versions before defining whether component replacement, configurable text, or both are required; done means the chosen API is documented and its behavior is covered by an appropriate test.

Written by the indexing model from the issue text.