fix: update file upload to use RC 8.x rooms.media API #1070
+54
−18
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Brief Title
fix: update file upload to use RC 8.x rooms.media API
Acceptance Criteria fulfillment
[x] File uploads work on Rocket.Chat 8.x servers
[x] Thread attachments supported (tmid parameter)
[x] File description is properly sent
[x] Auth headers included in both requests
Fixes #1069
Video/Screenshots
Screencast.From.2026-01-15.21-33-44.mp4
PR Test Details
Note: The PR will be ready for live testing at https://rocketchat.github.io/EmbeddedChat/pulls/pr-<pr_number> after approval. Contributors are requested to replace
<pr_number>with the actual PR number.