[Feature Request]Modal box full screen adaptive current Tab

### What problem does this feature solve?
Avoid creating new tabs to make the interface look sharper.
避免新建Tab，使界面看起来更清晰。

### What does the proposed API look like?
Modal box full screen adaptive current Tab。
模态框全屏自适应当前Tab。

I hope to add an example: complete the list, add a form, etc. under the same tab.
希望增加例子：在同一Tab下完成列表、新增表单等。


No implementation files or tests are named. Review the existing modal and tab entry points first, then define how a modal fills the current tab and verify that the list and form examples work without opening new tabs.

Written by the indexing model from the issue text.