Fix edge-to-edge insets

[segunfamisa]

This PR adds support for edge-to-edge and insets to various activities and closes https://github.com/mozilla-mobile/reference-browser/issues/3624

[mergify[bot]]

This pull request has been removed from the queue for the following reason: pull request dequeued.

Pull request #3636 has been dequeued. Mergify failed to merge the pull request. GitHub can't merge the pull request after 15 retries. Base branch was modified in the meantime.

You should look at the reason for the failure and decide if the pull request needs to be fixed or if you want to requeue it. If you do update this pull request, it will automatically be requeued once the queue conditions match again. If you think this was a flaky issue instead, you can requeue the pull request, without updating it, by posting a @mergifyio requeue comment.