Don't display the Enigmail setup wizard by default when starting Thunderbird
We did not display it before Tails 3.8 (in line with the decision made on #10436 (closed)) but Tails 3.8 displays it. It should not.
Feature Branch: bugfix/15746-hide-enigmail-config-wizard
Related issues
- Related to #15658
- Related to #15693 (closed)
- Related to #12680 (closed)
- Blocks #15334 (closed)
Original created by @intrigeri on 15746 (Redmine)