Improve internal kernel API /api/attr/batchSetBlockAttrs

[IAliceBobI]

"/api/attr/batchSetBlockAttrs" 这个接口修改的属性，并没持久化

Is there an existing issue for this?

• I have searched the existing issues

Can the issue be reproduced with the default theme (daylight/midnight)?

• I was able to reproduce the issue with the default theme

Could the issue be due to extensions?

• I've ruled out the possibility that the extension is causing the problem.

Describe the problem

<div data-subtype="u" data-node-id="20240222141450-fm4g1vg" 
data-node-index="1" data-type="NodeList" class="list" 
custom-riff-decks="20230218211946-2kw8jgx" updated="20240222141450">

比如此列表，从属性面板看，有其他定义属性，但element里面没有。

[IAliceBobI]

"/api/attr/batchSetBlockAttrs" 这个接口修改的属性，并没持久化。重启思源就没了。