Add abort message to the version page and/or task pages, add 'aborted' status label

When a commit queue merge is failing (see link in spruce), it is currently needed to search for the error message in the tasks' logs.

It would be helpful to add the abort message directly in the version page, so to don't have to dive into the logs (sometimes it's difficult to find the real abort reason as other failure messages are shown as well)

We should also consider exposing the 'aborted' state of the task in a status label, to more easily distinguish aborted tasks from failed tasks.
The legacy UI functionality of EVG-12483 should be added as well. These two features in concert provide discoverable navigation to the commit queue failing task, which lessens the need to link to this task on version details directly.

If it's not possible to encompass tasks aborted from commit queue merges and tasks aborted by users under the same 'aborted' status label, EVG-13248 should be reopened and done separately.

The aborted status should be filterable separately from other failed status types.