Probe_Stow does not retract pin on SKR Pico

When I turn the printer on, the probe will deploy and retract properly, but after the probe deploys for homing, it doesn't retract, it just stays out. I have to manually force it back in.

I tried manually entering commands in the console. `Probe_Deploy` works fine, but `Probe_Stow` has no effect, and neither does `SET_PIN PIN=probe_enable VALUE=0`.

I'm using the MicroProbe V2 with Klipper on an SKR Pico.

MicroProbe.conf
```
[output_pin probe_enable]
pin: gpio29 # The control IO pin
value: 0 # Probe default retracted

# Probe deploy command
[gcode_macro Probe_Deploy]
gcode:
SET_PIN PIN=probe_enable VALUE=1

# Probe stow command
[gcode_macro Probe_Stow]
gcode:
SET_PIN PIN=probe_enable VALUE=0

[probe]
pin: ^!gpio22 # The detection IO, ^ means high-level triggered, V2 should be ^! means low-level triggered.
deactivate_on_each_sample: False
x_offset: -33.0 # Actual installed offset of MicroProbe
y_offset: -9.0 # Actual installed offset of MicroProbe
#z_offset: 0.0 # Actual installed offset of MicroProbe
speed: 5.0
activate_gcode:
Probe_Deploy
G4 P500 # Allow 500 milliseconds for the probe to deploy
deactivate_gcode:
Probe_Stow
```