fix(segmentation): Removed LOAD/hydrate button for segmentation overlays (#5214)

tests/SEGDataOverlayNoHydrationThenMPR.spec.ts

@@ -1,5 +1,6 @@
 import { test } from 'playwright-test-coverage';
 import { visitStudy, checkForScreenshot, screenShotPaths } from './utils';
+import { assertNumberOfModalityLoadBadges } from './utils/assertions';
 
 test.beforeEach(async ({ page }) => {
   const studyInstanceUID = '1.3.12.2.1107.5.2.32.35162.30000015050317233592200000046';
@@ -16,9 +17,14 @@ test('should launch MPR with unhydrated SEG chosen from the data overlay menu',
   await page.getByText('SELECT A SEGMENTATION').click();
   await page.getByTestId('Segmentation').click();
 
+  // Adding an overlay should not show the LOAD button.
+  assertNumberOfModalityLoadBadges({ page, expectedCount: 0 });
+
   // Hide the overlay menu.
   await page.getByTestId('dataOverlayMenu-default-btn').click();
 
+  await page.waitForTimeout(5000);
+
   await checkForScreenshot(
     page,
     page,
@@ -28,9 +34,14 @@ test('should launch MPR with unhydrated SEG chosen from the data overlay menu',
   await page.getByTestId('Layout').click();
   await page.getByTestId('MPR').click();
 
+  await page.waitForTimeout(5000);
+
   await checkForScreenshot(
     page,
     page,
     screenShotPaths.segDataOverlayNoHydrationThenMPR.segDataOverlayNoHydrationPostMPR
   );
+
+  // Adding an overlay should not show the LOAD button.
+  assertNumberOfModalityLoadBadges({ page, expectedCount: 0 });
 });