Emoji and mention autocomplete shift the view

[jpraet]

Description

When triggering the emoji or mention autocomplete with : or @ in a review comment, the view gets shifted under the sticky header.

Screenshots

Gitea Version

1.22.0+dev-469-g33439b733

Can you reproduce the bug on the Gitea demo site?

Yes

Operating System

Windows

Browser Version

Google Chrome 120.0.6099.130

[wxiaoguang]

-> Improve the scroll behavior for emoji/mention list #28597