Messages with mobile camera images not visible on desktop

Description:

Messages sent from the mobile app with a newly captured camera image attachment are visible on the mobile client, but are not properly rendered on the desktop/web client.

The issue appears to occur specifically when using the in-app camera capture flow on the mobile application.

Steps to reproduce:

1. Open the Rocket.Chat mobile app
2. Take a photo using the in-app camera feature
3. Add a text message/caption
4. Send the message to a channel or direct message
5. Open the same conversation from the desktop/web client

Expected behavior:

The message and image attachment should render correctly on both mobile and desktop/web clients.

Actual behavior:

• The message renders correctly on the mobile client
• The same message cannot be properly viewed from the desktop/web client
• The issue appears reproducible consistently

Server Setup Information:

• Version of Rocket.Chat Server: 8.4.0
• License Type: Community
• Number of Users: 100
• Operating System: Linux
• Deployment Method: docker
• Number of Running Instances: 1
• DB Replicaset Oplog: yes
• NodeJS Version: v22.16.0
• MongoDB Version: 8.2.7

Client Setup Information

• Desktop App or Browser Version: Firefox 150.0.1
• Operating System: Ubuntu 24.04

Additional context

The issue seems related specifically to messages containing images captured directly from the mobile app camera flow.

Messages sent without camera-captured attachments do not appear to be affected.

No files or tests are named; start by reproducing the mobile in-app camera capture flow and compare the resulting attachment with its desktop/web rendering. Done means camera-captured image messages, including captions, render correctly on both mobile and desktop/web clients.