rooms.media API endpoint only upload file but does not send message

Description:

The rooms.media API endpoint does not send a message, but only uploads the file to the channel. Unlike rooms.upload, which does send a message but will be obsolete in version 8.0.0.

Steps to reproduce:

1. Call rooms.media endpoint with a bot

curl -s --request POST \
    --url "https://<server>/api/v1/rooms.media/<rid>" \
    --header "X-User-Id: <X-User-Id>" \
    --header "X-Auth-Token: <X-Auth-Token>" \
    -F "file=@<filename>;type=text/plain" \
    -F "msg=foo"

2. Open the channel page. You'll see the file in ... > Files but not the message in the feed.

Expected behavior:

A message sended with a notification like rooms.upload endpoint.

Actual behavior:

The file is uploaded but no message are sent.

Server Setup Information:

• Version of Rocket.Chat Server: 7.0.0
• Number of Users: 100
• Deployment Method: Docker
• NodeJS Version: 20.18.1
• MongoDB Version: 7.0.15

Client Setup Information

• Desktop App or Browser Version: 4.1.2 (desktop)
• Operating System: MacOS

Additional context

I noticed in the code that for the rooms.media route there is no message sending, unlike the rooms.upload route.

Task: DOCS-1311

Start in apps/meteor/app/api/server/v1/rooms.ts at the rooms.media route and compare it with the rooms.upload route linked in the issue. Reproduce the upload with the provided curl request, then verify that rooms.media produces a message and notification in the channel feed as well as the uploaded file.