Now try this:
// Wait upto 10 seconds for a_Accounts to be visible...
WebUI.waitForElementVisible(findTestObject('Object Repository/Page_Home Salesforce/a_Accounts'), 10)
WebUI.delay(2)
WebUI.executeJavaScript('''
document.querySelector('a[href="/lightning/o/Account/home"] > span').click()
''', null)
If that works, you can try removing WebUI.delay(2).