feat(thumbnails): Enhance DICOM Thumbnail Rendering with different strategies (#5004)

Co-authored-by: Martin Bellehumeur, M. Eng. <23396581+mbellehumeur@users.noreply.github.com>

tests/mpr2.spec.ts

@@ -5,7 +5,7 @@ test.beforeEach(async ({ page }) => {
   const studyInstanceUID =
     '1.3.12.2.1107.5.2.32.35162.30000015050317233592200000046&hangingprotocolid=mpr';
   const mode = 'viewer';
-  await visitStudy(page, studyInstanceUID, mode, 2000);
+  await visitStudy(page, studyInstanceUID, mode, 10000);
 });
 
 test('should properly display MPR for MR', async ({ page }) => {