fix(hotkeyBindings): consolidate Escape hotkey behavior for contour drawing tools (#6104)

* fix(hotkeyBindings): consolidate Escape hotkey behavior for contour drawing tools

* PR feedback.

* PR feedback.

tests/CatmullRomSplineContourSegmentation.spec.ts

@@ -0,0 +1,47 @@
+import { expect, test, visitStudy } from './utils';
+import { press } from './utils/keyboardUtils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.12.2.1107.5.2.32.35162.30000015050317233592200000046';
+  const mode = 'segmentation';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should cancel an in-progress Catmull-Rom spline contour segmentation via Escape', async ({
+  page,
+  rightPanelPageObject,
+  viewportPageObject,
+}) => {
+  const contourPanel = rightPanelPageObject.contourSegmentationPanel;
+
+  // Create a Contour-type segmentation so the contour drawing tools become enabled.
+  // Creating it adds a default "Segment 1"; wait for that row before drawing.
+  await contourPanel.addSegmentation();
+  await expect(contourPanel.panel.rows).toHaveCount(1);
+
+  // Activate the Spline Contour tool, then arm the Catmull-Rom spline variant.
+  await contourPanel.tools.splineContour.click();
+  await contourPanel.tools.splineContour.selectType('catmullRom');
+
+  const activeViewport = await viewportPageObject.active;
+  await activeViewport.clickAt([
+    { x: 380, y: 299 },
+    { x: 420, y: 236 },
+    { x: 523, y: 232 },
+  ]);
+
+  // Ensure the three points clicked above are rendered in the DOM before pressing Escape
+  await expect(activeViewport.svg('circle')).toHaveCount(3);
+  await press({ page, key: 'Escape' });
+
+  // Pressing Escape should cancel the in-progress Catmull-Rom spline contour
+  await expect(activeViewport.nthAnnotation(0).locator).toBeHidden();
+
+  // Draw again to verify the contour tool is still interactive after cancellation
+  await activeViewport.clickAt([
+    { x: 380, y: 299 },
+    { x: 420, y: 236 },
+    { x: 523, y: 232 },
+  ]);
+  await expect(activeViewport.svg('circle')).toHaveCount(3);
+});