yoyoyohamapi e32d6b9347 fix(core): action items in the ai response are not optimized for dark mode (#11839) ...

### TL;DR

* Fix action items in the AI response are not optimized for dark mode.
* Fix answer content in the AI response are not optimized for edgeless theme.

![截屏2025-04-21 14.26.41.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyktQ6Qwc7H6TiRCFoYN/9c991df4-36b1-4969-ac0d-3c582edb1120.png)

[uploading 截屏2025-04-21 14.30.00.png...]

> CLOSE BS-3249

2025-04-24 16:48:09 +08:00

..

backend

fix(server): empty mimetype attachments fallback (#11869)

2025-04-23 15:57:12 +08:00

common

fix(nbstore): fix indexer cache not working (#11922)

2025-04-24 16:43:04 +08:00

frontend

fix(core): action items in the ai response are not optimized for dark mode (#11839)

2025-04-24 16:48:09 +08:00