Revert "Fixed bug which prevented historical images from loading. (#5271)"

This reverts commit 78002f0a24.

e2e/tests/plugins/imagery/exampleImagery.e2e.spec.js

@@ -257,8 +257,10 @@ test('Example Imagery in Display layout', async ({ page }) => {
     await page.click('text=Example Imagery');
 
     // Clear and set Image load delay to minimum value
+    // FIXME: Update the value to 5000 ms when this bug is fixed.
+    // See: https://github.com/nasa/openmct/issues/5265
     await page.locator('input[type="number"]').fill('');
-    await page.locator('input[type="number"]').fill('5000');
+    await page.locator('input[type="number"]').fill('0');
 
     // Click text=OK
     await Promise.all([

example/imagery/plugin.js

@@ -168,7 +168,7 @@ function getImageUrlListFromConfig(configuration) {
 }
 
 function getImageLoadDelay(domainObject) {
-    const imageLoadDelay = Math.trunc(Number(domainObject.configuration.imageLoadDelayInMilliSeconds));
+    const imageLoadDelay = domainObject.configuration.imageLoadDelayInMilliSeconds;
     if (!imageLoadDelay) {
         openmctInstance.objects.mutate(domainObject, 'configuration.imageLoadDelayInMilliSeconds', DEFAULT_IMAGE_LOAD_DELAY_IN_MILISECONDS);