Action buttons became opaque in 1.20.40

After 1.20.40, the action buttons became no longer transparent, which looks strange. I hope it can be restored to its previous state.

Steps to reproduce:

1. Use touch control mode and enter a world.
2. Find an interactive mob and aim at it, then an action button will appear.

Observed results:
The action button is opaque.

Expected results:
Action buttons should be semi transparent as before.