Add *.vsassets.io to trusted domain whitelist?

[mjbvz]

Testing #79465

Repo

1. Open extension page.
2. Click on license field in the extension header

Bug
See alert such as:

I think that the https://*.gallerycdn.vsassets.iodomains are controlled by Microsoft and should be whitelisted by default

[mjbvz]

Also note that manually whitelisting these is a pain since each extension has a unique subdomain