fix(Examples): ensure multi-button grab emits correct state
fix(Examples): ensure multi-button grab emits correct state

The multi-button grab set up in the Locomotion example scene was
not emitting the correct state when one button was pressed and then
the other button was pressed. This has been fixed using the new
AnyAction component.

gomez-addams/SteamVR_Unity_Toolkit,thestonefox/VRTK,thestonefox/SteamVR_Unity_Toolkit