MV3 Content Security Policy (#16136)
MV3 Content Security Policy (#16136)

* MV3 Content Security Policy

- updated `extension_pages`
- added `sandbox`

* Added isolated_world

* Feedback updates
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data