VRC Animator Play Sound doesn't work if Playback Order isn't Random

[TheMrGong]

Likely to do with Random being the only enum check that uses .ToString instead of an equality check

Reproduction steps:

1. Fresh project
2. Open the VRChat SDK > Samples > Avatar Dynamics Robot Avatar PC
3. Add a new "Test" local animator parameter to the FX layer
4. Set the Button Pressed State on the Button Activated layer to use the "Test" parameter instead of the contact parameter
   -> It should work normally as by default it uses random
5. Set the VRC Animator Play Audio Behaviour's playback order to anything besides "Random"