TalkBack no longer focuses last action button

[ByteHamster]

Step 1: Are you in the right place?

• I have verified there are no duplicate active or recent bugs, questions, or requests
• I have verified that I am using the latest version of the library.

Step 2: Describe your environment

• Library version: 3.3.0
• Android version: 13
• Support library version: ?
• Device brand: OnePlus
• Device model: 7T

Step 3: Describe the problem:

Steps to reproduce:

1. Click main FAB

Observed Results:

• FAB remains focused

Expected Results:

• An action button gets focused

Relevant Code:

This is a regression from 3.2.0, probably introduced by 5c9afda. Focusing one of the buttons was implemented in 6653f91 and now no longer works.