feat: refresh live preview edit videos

- Replace inline-text-editing.mp4 and drag-drop.mp4 with new
  recordings (compressed to 1080p30 / CRF 20, ~900KB / ~2MB).
- Add edit-hyperlink.mp4 (~700KB).
- Drop unused live-preview-edit-main.mp4 and the temporary
  live-preview-text-edit.mp4 / live-preview-drag-drop.mp4 files
  added in the previous commits (now superseded by the
  same-named-as-old replacements above).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: devvaannsh