test(datetime): wait for the last datetime to be ready

Author: brandyscarney

core/src/components/datetime/test/custom/datetime.e2e.ts

@@ -30,7 +30,7 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
     test('should allow styling calendar days in grid style datetimes', async ({ page }) => {
       const datetime = page.locator('#custom-calendar-days');
 
-      await page.locator('.datetime-ready').waitFor();
+      await page.locator('.datetime-ready').last().waitFor();
 
       await expect(datetime).toHaveScreenshot(screenshot(`datetime-custom-calendar-days`));
     });