GALIL: zero encoder when open loop?

Question on new galil driver - should it call `DE` even if open loop when it homes? An edge case of if you have a working encoder but home with `UEIP` set to no and then turn encoder on afterwards. The current behavior is the same as the old driver so not a change. If a motor position is explicitly redefined post home, a check on `ueip` is not made, so calling `DE` in all cases may be more consistent?

```
GalilAxis::jogAfterHome(void)

//Program encoder position register
// question: should we do this even if ueip is false? If you home an axis with ueip false and then turn on the encoder should it work?
// setPosition / setEncoderPosition don't check ueip
if (ueip_ || motorIsServo_) {
sprintf(pC_->cmd_, "DE%c=0", axisName_);
pC_->sync_writeReadController();
}
```

Start at GalilAxis::jogAfterHome(void), then compare the ueip handling in setPosition and setEncoderPosition. Determine the intended behavior when homing with UEIP disabled and enabling the encoder afterward; done means the behavior is decided and the relevant paths are made consistent, with coverage added if existing tests support it.

Written by the indexing model from the issue text.