Siri activation beep stopped working with iOS 15.2.1

Siri activation beep stopped working after iOS 15.x upgrade, some times is essential to know if Siri was activated, example if you are not looking any screen at all (wearing a helmet on a motorcycle). You just don't know if Siri is listening at all. Pleaaaaase get back Siri's activation beep. It's annoying that you have to stop doing whatever you are doing just to be sure that Siri is listening.

Set up "Hey Siri" to help Siri recognize your voice

1. Go to Settings.
2. Tap Siri & Search.
3. Turn off Listen for "Hey Siri," then turn it back on.
4. When the Set Up "Hey Siri" screen appears, tap Continue.
5. Say each command that you see on your screen.
6. Tap Done.

If "Hey Siri" isn't working on your iPhone or iPad - Apple Support

Follow the Steps One after the other in sequence...

1. Settings > Siri & Search > Listen for "Hey Siri" [Disable]
2. Settings > Siri & Search > Press Home for Siri [Disable]
3. Next
4. Settings > Siri & Search > Press Home for Siri [Enable]
5. Settings > Siri & Search > Listen for "Hey Siri" [Enable]

Watch the GIF below