Preon shows for a blip, even if no sound for it.

[NoSloppy]

Example:

StylePtr<Layers<Red,
  InOutTrL<TrWipe<500>,TrWipeInX<WavLen<EFFECT_RETRACTION>>>,
  TransitionEffectL<TrConcat<TrInstant,Chartreuse,TrDelayX<WavLen<EFFECT_PREON>>>,EFFECT_PREON>
>>()

with no preon.wavs in the font, the Chartreuse shows for a moment at ignition.

[fdarosa2663]

FWIW, I handle this in my prop like this:
https://github.com/profezzorn/ProffieOS/blob/master/props/saber_fett263_buttons.h#L6821C1-L6828C12