Use correct 1.19.3 nms version
1.19 nms version names are a bit wacky so the 1.19.3 support added didn't actually use the correct VolatileCodeHandler. This MR fixes that.
1.19 nms version names are a bit wacky so the 1.19.3 support added didn't actually use the correct VolatileCodeHandler. This MR fixes that.