Edit mode : Protected attachments are always displayed as private

[rich20]

Describe the bug https://github.com/Kunena/Kunena-Forum/pull/9764 I found one more thing as I had tested protected attachments. Protected attachments are always shown as private in edit mode.

To Reproduce

1. set in the configuration Protect Attachments to Yes
2. upload some attachments (it does not matter whether it is inserted into the message or not)
3. Submit and then edit the message

Result All attachments are displayed as private

System information

• Joomla version: ‎5.2.2-dev
• Joomla template: CASSIOPEIA
• Kunena version: 6.3.7-DEV
• Kunena template: Aurelia
• Php version: 8.3.12
• Database version: 10.11.8-MariaDB

Desktop

• OS: Ubuntu 22.04.5 LTS
• Browser: Chromium, Firefox and Opera