Laser turns off after following code is sent after M3

[T3P3Tony]

@morokolli see this thread about downgrading: https://forum.duet3d.com/topic/13401/cant-change-from-v3-0-to-v2-05-missing-file/9

[morokolli]

@dc42 I'll rather stay at V3 codebase.
Reverting back to 2.05 requires re-setting too many things (endstops, laser control, etc..)