Include 3rd party images/images in a Manifest V3 extension page

index.html

<!--
  Copyright 2021 Google LLC.
  SPDX-License-Identifier: Apache-2.0
-->

<video width="320" height="240" controls
  preload="none" playsinline="" aria-label="Stephen Colbert Popcorn Munching GIF"
  disablepictureinpicture="" poster="https://pbs.twimg.com/tweet_video_thumb/E8o7fA9VoAojxVl.jpg"
  src="https://video.twimg.com/tweet_video/E8o7fA9VoAojxVl.mp4" type="video/mp4"></video>

manifest.json

{
  "name": "___ CSP test ___",
  "version": "1.0",
  "manifest_version": 3,
  "content_security_policy": {
    "extension_pages": "default-src 'self'; img-src 'self' https://*.twimg.com; media-src 'self' https://*.twimg.com"
  },
  "action": {
    "default_popup": "index.html"
  },
  "key": "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"
}