Update "Use Origin Trials in Microsoft Edge" per new OT portal (a backup PR)

[mikehoffms]

Closing Without Merging. we got PR 3288 to un-stall, by pushing a dummy commit.

This is a backup PR in case needed, including a capture of the pushed "Writer/Editor pass" commit that's not yet appearing in PR 3288. Pushed a commit "Writer/Editor pass" to PR 3288, which then became stalled checking mergability status.

Rendered article for review:

• Use Origin Trials in Microsoft Edge
  • https://review.learn.microsoft.com/microsoft-edge/origin-trials/?branch=pr-en-us-3289
  • Before/Live
  • changelist pending

We're launching a new site for origin trials at https://developer.microsoft.com/microsoft-edge/origin-trials on 10/17 (tentative).

The old site https://microsoftedge.github.io/MSEdgeExplainers/origin-trials/ will still remain working to support the Ad Selection API origin trial until the new site can. This is noted in the update so that we don't break developers.

This update includes information on how to register and use origin trial tokens and developer guidelines.

[learn-build-service-prod]

Learn Build status updates of commit b032c96:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/origin-trials/index.md	✅Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[mikehoffms]

Closing Without Merging. we got PR 3288 to un-stall, by pushing a dummy commit.