[Broken Website] Builtin mail is broken in Gmail web app

### Prerequisites

- [X] I [searched for any existing report](https://github.com/darkreader/darkreader/issues?q=is%3Aissue) about this website issue to avoid opening a duplicate.
- [X] I can reproduce this website issue in a new, unmodified web browser profile with Dark Reader installed as the only extension.

### Website Issue Description

on dark mode it hard to read - attached dark mode vs light mode

### Website Address

builtin Job mail - https://builtin.com/

### Steps To Reproduce

1. register
2. check Gmail - mails from built in

### Screenshots

_No response_

### Operating System

mac

### Web Browser name and version

Brave

### Dark Reader version

Version 4.9.96

### Additional Context

_No response_