Set uploaded video dimensions in markdown

Stanislav Lashmanovrequested to merge
slashmanov/set-video-dimensions-in-markdown into master

What does this MR do and why?

This MR adds uploaded video dimensions in markdown editor.

Screenshots or screen recordings

Before After
CleanShot_2025-10-31_at_18.16.26 CleanShot_2025-10-31_at_18.15.22

How to set up and validate locally

  1. Upload any video in markdown editor
  2. Observe video dimensions added

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