Read only shared files seem editable in current main branch

[max-nextcloud]

Describe the bug
Files that are shared as read only seem to be editable. When clicking a line it get's a blue highlight and one can type and change its content.

To Reproduce
Steps to reproduce the behavior:

1. Create a .md file with some paragraphs
2. Create a read only link to it
3. open that link in an incognito browser window
4. Click one of the paragraphs and start typing

Expected behavior
The text remains as it was. No highlights are applied and no content is altered

Screenshots

Client details:

• OS: ubuntu 22.04
• Browser: Chromium
• Version: current main branch
• Device: desktop

Text app version: current main branch

This behavior disappears when removing the webkit-user-modify setting:

[juliushaertl]

Good catch, seems I applied the rule to widely while it should only be for contenteditable=true https://github.com/nextcloud/text/pull/2712/files#diff-e45ce3a454c97498daa53f43c438ba1be6ee1b3cfea83cee90053fbe14ad78b2R17-R18

[alarmix]

I have a problem that may be somehow connected: if I share a folder read-only, the .txt and .md files in that folder can't be viewed. The window is empty, with only the filename shown at the top, and in the console I have the following error:
PUT https://xxxxxxxxx/index.php/apps/text/session/create 401 (Unauthorized)

[juliushaertl]

Please open a new issue and provide the additional details asked for in the issue template. :)