Dev channel update to 78.0.276.2 is live
This build is expected to be the final build for 78. As a result, it has a lot of fixes in it as well as the usual stability fixes and behavior changes. Also included are the following new features:
- Added the ability to open all items in a Collection in new tabs.
- Added dark theme support to edge://components.
- Added a management policy for importing settings from another browser.
