test(contour): Add the ContourSegmentToggleLock.spec.ts test file to test contour locking (#6072)

tests/utils/contourShowOnlyNthSegment.ts

@@ -0,0 +1,16 @@
+import type { RightPanelPageObject } from '../pages';
+
+// Hide all segments, to show only the nth one and makes it the active segment
+export async function contourShowOnlyNthSegment({
+  segmentationPanel,
+  index = 0,
+}: {
+  segmentationPanel: RightPanelPageObject['contourSegmentationPanel'];
+  index?: number;
+}) {
+  await segmentationPanel.segmentsVisibilityToggle.click();
+  const segment = segmentationPanel.panel.nthSegment(index);
+  await segment.toggleVisibility();
+  await segment.click();
+  return segment;
+}