Can't read content assist due to highlight color and text color being similar.

### Description

Possibly related to 10 year old issue https://github.com/dbeaver/dbeaver/issues/122

This is using default settings. See image below showing the content assist popup. I cannot read this popup due to the highlight foreground and background colors being so similar (not enough contrast)

Does dbeaver/eclipse have any configuration options that will permit making this readable? About 10 years ago in issue 122 the answer was "it's some sort of eclipse problem"

### DBeaver Version

Version 26.1.2.202607051737

### Operating System

Ubuntu 22.04, Xfce 4.16

### Database and driver

_No response_

### Steps to reproduce

_No response_

### Additional context

_No response_

Start by reproducing the content assist popup on Ubuntu 22.04 with the default DBeaver settings, using the screenshots and version details in the issue. Determine whether the unreadable highlight colors are controlled by DBeaver or Eclipse; done means identifying a working configuration or a confirmed fix path.

Written by the indexing model from the issue text.