Improve regression test readability

Signed-off-by: Loren Eteval <loren.eteval@proton.me>

tests/test_sing_tun.py

@@ -1760,6 +1760,7 @@ class SingTUNStartupTest(unittest.TestCase):
                             operation = manager.startAsync(
                                 _Configuration(), 'Global', deepcopy=False
                             )
+
                             operation.failed.connect(
                                 lambda _operation, message, details: failures.append(
                                     (message, details)
@@ -1778,11 +1779,13 @@ class SingTUNStartupTest(unittest.TestCase):
                                 self.assertEqual(
                                     failures, [('', 'Unsupported sing-tun stack')]
                                 )
+
                                 self.assertEqual(
                                     router.state, RuntimeLeaseState.Released
                                 )
                                 self.assertFalse(primary.isRunning())
                                 self.assertEqual(manager.runtimes, [])
+
                                 hostPlan.assert_not_called()
                                 nativeRuntime.assert_not_called()
                         finally:

tests/test_theme_transition.py

@@ -114,6 +114,7 @@ for _ in range(30):
                 window = self.createWindow()
                 transition = self.createTransition([window], duration=100000)
                 finished = QSignalSpy(transition.transitionFinished)
+
                 transition.apply(lambda: None)
 
                 window.resize(330, 190)
@@ -150,6 +151,7 @@ for _ in range(30):
         )
         finished = QSignalSpy(transition.transitionFinished)
         timer = transition._completionTimer
+
         transition.apply(lambda: None)
 
         window.resize(330, 190)