[3.8.2] Modify active of different canvas when previewing editor To switch rendering content, render residue appears

[zhefengzhang]

Cocos Creator version

3.8.2

System information

Windows10

Issue description

Modify active of different canvas when previewing editor To switch rendering content, render residue appears 编辑器预览时修改不同 canvas 的 active 用于切换渲染内容，会出现渲染残留

Relevant error log output

Steps to reproduce

https://github.com/cocos/cocos-engine/assets/35944775/f0e04296-f054-4e53-9866-26c8ee3b2730

Minimal reproduction project

20240205001.zip

[star-e]

for the camera which is not rendering, the camera.window.swapchain is null.

[star-e]

The cameras have different _window: RenderWindow.

[star-e]

It seems Editor will call changeTargetWindow on the first active camera, with the swapchain 65538 For the 2nd enabled camera, the swapchain will remain 'null'.

[star-e]

Fixed in 3.8.4