Switch tracked-controls to use specific ID rather than idPrefix once browsers/SteamVR stabilize OpenVR Gamepad vs OpenVR Controllers

[ngokevin]

Description:

#2370

[machenmusik]

I do wonder whether there will actually be only one specific string, vs. "OpenVR Controller" "OpenVR Gamepad" "OpenVR Flight Stick" "OpenVR Tracker" -- it may be that we end up needing prefix support

[dmarcos]

Firefox is going to check the string to be consistent with Chrome

[dmarcos]

Using the string to identify controllers cannot be a long term solution. We have to come up with a better way. It might require changes in the Gamepad / WebVR APIs

[machenmusik]

agree. may be a challenge to get consistent values across OS, as not all controllers have same ID namespaces like USB PID/VID

[ngokevin]

Closing for now as everything works, the prefix seems a bit more flexible. We can reevaluate strings later on.