Describe the bug

With the recent changes the default workspace is started in ephemeral mode (aka "safe mode").

The problem is that when used during a "restart", all the changes in the workspace will get lost.

Steps to reproduce

• Start an empty workspace
• Add a few files to the workspace and then add a devfile with an image that doesn't exist (see example below)
• Select "Restart Workspace from local Devfile"
• Wait for an error message
• Click the "Restart with default devfile" button.
• Wait for the target workspace to restart and open IDE
• See that the devfile doesn't exist anymore, and all the changes got lost

schemaVersion: 2.2.0
metadata: 
  name: devfile-with-typo
components: 
  - name: tools
    container: 
      image: quay.io/does/not/exist

Expected behavior

Don't use ephemeral mode when "Restarting from default Devfile"