Description:

In Embedded Chat, File messages can contain 'File description'. and the 'Copy' option functionality is not working for it.

Steps to reproduce:

1. Login
2. Upload a new file with 'File description'. Send it.
3. Click on 'Copy' option.
4. Try to paste it, or check Clipboard

Expected behavior:

Should Copy the respective File description and if the File description is not present then a popup should appear saying 'No message or attachment description available to copy'

Actual behavior:

not copying the File description