No Z_MULTI_ENDSTOPS when HOMING_Z_WITH_PROBE (#20254)

Marlin/src/inc/SanityCheck.h

   #error "Enable USE_ZMIN_PLUG when homing Z to MIN."
 #elif Z_HOME_DIR > 0 && ENABLED(USE_PROBE_FOR_Z_HOMING)
   #error "Z_HOME_DIR must be -1 when homing Z with the probe."
+#elif BOTH(HOMING_Z_WITH_PROBE, Z_MULTI_ENDSTOPS)
+  #error "Z_MULTI_ENDSTOPS is incompatible with USE_PROBE_FOR_Z_HOMING."
 #elif Z_HOME_DIR > 0 && DISABLED(USE_ZMAX_PLUG)
   #error "Enable USE_ZMAX_PLUG when homing Z to MAX."
 #endif

buildroot/tests/DUE-tests

 restore_configs
 opt_set MOTHERBOARD BOARD_RADDS
 opt_enable USE_XMAX_PLUG USE_YMAX_PLUG ENDSTOPPULLUPS BLTOUCH AUTO_BED_LEVELING_BILINEAR \
-           Z_MULTI_ENDSTOPS Z_STEPPER_AUTO_ALIGN Z_STEPPER_ALIGN_KNOWN_STEPPER_POSITIONS \
-           Z_SAFE_HOMING
+           Z_STEPPER_AUTO_ALIGN Z_STEPPER_ALIGN_KNOWN_STEPPER_POSITIONS Z_SAFE_HOMING
            #TOUCH_UI_FTDI_EVE LCD_ALEPHOBJECTS_CLCD_UI OTHER_PIN_LAYOUT
 opt_set NUM_Z_STEPPER_DRIVERS 3
-opt_add Z2_MAX_ENDSTOP_INVERTING false
-opt_add Z3_MAX_ENDSTOP_INVERTING false
-opt_add Z2_MAX_PIN 2
-opt_add Z3_MAX_PIN 3
 pins_set ramps/RAMPS X_MAX_PIN -1
 pins_set ramps/RAMPS Y_MAX_PIN -1
 exec_test $1 $2 "RADDS with ABL (Bilinear), Triple Z Axis, Z_STEPPER_AUTO_ALIGN" "$3"