fix(Pointer): ignore trigger colliders with play area cursor
fix(Pointer): ignore trigger colliders with play area cursor

The Play Area Cursor was considering a collision with a trigger
collider an actual collision therefore teleporting into trigger
colliders was not possible.

This fix ensures that colliders that are set to trigger are no
longer considered a valid collision target.

gomez-addams/SteamVR_Unity_Toolkit,Innoactive/IA-unity-VR-toolkit-VRTK,thestonefox/VRTK,TMaloteaux/SteamVR_Unity_Toolkit,virror/VRTK,adamjweaver/VRTK,gpvigano/SteamVR_Unity_Toolkit,Fulby/VRTK,thestonefox/SteamVR_Unity_Toolkit,mattboy64/SteamVR_Unity_Toolkit,gpvigano/VRTK,red-horizon/VRTK