Fix: reasonable full solar-passthrough default values

value 100 is not accepted by the webapp as inputs for full
solar-passthrough start and stop volages. 66V is the documented
value to be used if one wants to disable full solar-passthrough
(while keeping (non-full) solar-passthrough).

include/defaults.h

@@ -144,8 +144,8 @@
 #define POWERLIMITER_VOLTAGE_LOAD_CORRECTION_FACTOR 0.001
 #define POWERLIMITER_RESTART_HOUR -1
 #define POWERLIMITER_FULL_SOLAR_PASSTHROUGH_SOC 100
-#define POWERLIMITER_FULL_SOLAR_PASSTHROUGH_START_VOLTAGE 100.0
-#define POWERLIMITER_FULL_SOLAR_PASSTHROUGH_STOP_VOLTAGE 100.0
+#define POWERLIMITER_FULL_SOLAR_PASSTHROUGH_START_VOLTAGE 66.0
+#define POWERLIMITER_FULL_SOLAR_PASSTHROUGH_STOP_VOLTAGE 66.0
 
 #define BATTERY_ENABLED false
 #define BATTERY_PROVIDER 0 // Pylontech CAN receiver