Describe the bug

GenericXRSDKController.cs and OculusXRSDKTouchController.cs are both missing cases for handling (Primary/Secondary)Button Touch input which leads to anything assigned to those slots in the Oculus Controller Mappings not ever triggering.

To reproduce

Steps to reproduce the behavior:

1. Go to Controllers/Controller Definitions in Mixed Reality Toolkit
2. Click on Oculus Touch Right Hand Controller
3. Assign input action to either button touch
4. Try to trigger input action in play mode

Expected behavior

Input actions assigned to button touch inputs should trigger

Your setup (please complete the following information)

• Unity Version 2021.3.9f1
• MRTK Version 2.7.3

Target platform (please complete the following information)

• Quest 2