Disable sandboxing for unit tests needing webengine
The CI runs those tests as root, in which case webengine refuses to start if sandboxing is enabled.
This isn't strictly needed for other users, but at least doesn't break those tests there.
The CI runs those tests as root, in which case webengine refuses to start if sandboxing is enabled.
This isn't strictly needed for other users, but at least doesn't break those tests there.