Hands-free text message retrieval not working since upgrading to iOS 14.x

I have figured out the issue. I had been using the phrase, "Read latest text message," to listen to any new text messages. However, that phrase would cause Siri to read the latest message I had received even if I hadn't received any new text messages since the phone was locked. Apparently Apple deemed that a privacy threat, so now it will only let you listen to new text messages, which are accessed with a phrase like, "Do I have any new text messages?" or "Read new messages." That makes some sense because now it's essentially limiting you to hear messages that would otherwise appear on the lock screen, whereas before you could go beyond that without knowing someone's passcode.