Content-Type header not set for DEA uploaded media

[1t5j0y]

https://avni.freshdesk.com/a/tickets/5013

Describe the bug
On clicking of an image link in any integrating app that has a link to /web/media?url=<s3 url>, the image should be displayed in browser and not downloaded. Currently for images uploaded via DEA, the images are downloaded on click instead of rendered in browser.

Root cause
'Content-Type' header is not set for images uploaded from DEA using server API /web/uploadMedia and as a result the default content type application/octet-stream is set on the file leading to this behaviour.

For reference, for images uploaded from android, we are fixing the extension and setting Content-Type.

To Reproduce
Steps to reproduce the behavior:

1. Upload a jpeg image from DEA
2. Access the image using /web/media?url=<s3 url> url
3. Notice that download popup is shown and image is not rendered in the browser.

Expected behavior

1. Image should be displayed in the browser and not downloaded.
2. Add 'jpeg' as a valid image extension on media-viewer app.

Screenshots
Video in ticket.

Additional context
Add any other context about the problem here.

Developer Checklist
Developer fixing the bug should fill this checklist.

• Does the fix require extensive regression testing?
• Are you mentioning the required scenarios that could be affected?