fix(segmentation): Changes to fix problems with non hydrated/loaded segmentations to be viewable when switching hanging protocols (e.g. MPR) (#5139)

tests/SEGNoHydrationThenMPR.spec.ts

@@ -0,0 +1,22 @@
+import { test } from 'playwright-test-coverage';
+import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+
+test.beforeEach(async ({ page }) => {
+  const studyInstanceUID = '1.3.12.2.1107.5.2.32.35162.30000015050317233592200000046';
+  const mode = 'viewer';
+  await visitStudy(page, studyInstanceUID, mode, 2000);
+});
+
+test('should launch MPR with unhydrated SEG', async ({ page }) => {
+  await page.getByTestId('side-panel-header-right').click();
+  await page.getByTestId('study-browser-thumbnail-no-image').dblclick();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(page, page, screenShotPaths.segNoHydrationThenMPR.segNoHydrationPreMPR);
+
+  await page.getByTestId('Layout').click();
+  await page.getByTestId('MPR').click();
+
+  await page.waitForTimeout(5000);
+  await checkForScreenshot(page, page, screenShotPaths.segNoHydrationThenMPR.segNoHydrationPostMPR);
+});