Remove soft hyphen from preview text

[hamza221]

Steps to reproduce

1. Receive a message
2. Look at the preview text

Expected behavior

Preview text doesn't contain Soft hyphen

Actual behavior

Only visible in RTL layout

Mail app version

No response

Nextcloud version

No response

Mailserver or service

No response

Operating system

No response

PHP engine version

None

Nextcloud memory caching

No response

Web server

None

Database

None

Additional info

Has to be fixed in the HTML2TEXT package