DSE-GUI: Fix safety pattern creation
- Drop the operator selection, as there is always a lesser-equal relation between tasks and ECUs.
- Fix the NPE by basing the constraint generation on supersets instead of the AF3 TaskArchitecture.
- Code cleanup.
Issue-Ref: 3752 Issue-Url: https://af3-developer.fortiss.org/issues/3752 Signed-off-by: Alexander Diewald diewald@fortiss.org