[chatview] received images are not displayed in the chatview

Bug report form

• Distribution: Linux
• OS version: Ubuntu 23.10
• Jami version: 202405300421
• What build : Beta
• Can you reproduce the bug: at will
• Steps taken that led to the bug (scenario):

2. I receive the message and click on the contact's name in the smartlist on my desktop
3. I click on download, and then the image is displayed correctly in the chatview
4. A contact sends me pictures from Jami on his iPhone

• Actual result: the pictures appear as files that I have to download, instead of being displayed directly.
• Expected result: the pictures should be displayed in the chatview without having to download them to be able to display them.