🐛 Change latency mode setting logic
🐛 Change latency mode setting logic

We should only ever attempt to set it if we are supposed
to set it to True. Otherwise there's no need to do
anything really and risk running into issues.

Closes #4203

foosel/OctoPrint,foosel/OctoPrint,foosel/OctoPrint,foosel/OctoPrint