Message preview in notification is buggy

[Revertron]

Checklist

• [x] I have used the search function to see if someone else has already submitted the same bug report.
• [x] I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

14.0

Where did you get the app from?

F-Droid

Android version

13

Device model

Sony Xperia 1 II

Steps to reproduce

The text in notifications shows HTML entities or HTML code itself.

I've got you some screenshots:

And I think that the issue is connected with #8471 and #9639.

Expected behavior

The text in the preview should be clean and without HTML.

Actual behavior

The text contains a lot of garbage.

Logs

No response