Commander: allow disarmin not-landed boat like rover

This is a hotfix and a boat should never even detect a takeoff
in normal operation.

src/modules/commander/Commander.cpp

@@ -685,7 +685,7 @@ transition_result_t Commander::disarm(arm_disarm_reason_t calling_reason, bool f
 {
 	if (!forced) {
 		const bool landed = (_vehicle_land_detected.landed || _vehicle_land_detected.maybe_landed
-				     || is_ground_rover(_vehicle_status));
+				     || is_ground_vehicle(_vehicle_status));
 		const bool mc_manual_thrust_mode = _vehicle_status.vehicle_type == vehicle_status_s::VEHICLE_TYPE_ROTARY_WING
 						   && _vehicle_control_mode.flag_control_manual_enabled
 						   && !_vehicle_control_mode.flag_control_climb_rate_enabled;

src/modules/commander/commander_helper.cpp

@@ -123,6 +123,16 @@ bool is_ground_rover(const vehicle_status_s &current_status)
 	return current_status.system_type == VEHICLE_TYPE_GROUND_ROVER;
 }
 
+bool is_boat(const vehicle_status_s &current_status)
+{
+	return current_status.system_type == VEHICLE_TYPE_BOAT;
+}
+
+bool is_ground_vehicle(const vehicle_status_s &current_status)
+{
+	return is_ground_rover(current_status) || is_boat(current_status);
+}
+
 // End time for currently blinking LED message, 0 if no blink message
 static hrt_abstime blink_msg_end = 0;
 static int fd_leds{-1};

src/modules/commander/commander_helper.h

@@ -56,6 +56,8 @@ bool is_vtol(const vehicle_status_s &current_status);
 bool is_vtol_tailsitter(const vehicle_status_s &current_status);
 bool is_fixed_wing(const vehicle_status_s &current_status);
 bool is_ground_rover(const vehicle_status_s &current_status);
+bool is_boat(const vehicle_status_s &current_status);
+bool is_ground_vehicle(const vehicle_status_s &current_status);
 
 int buzzer_init(void);
 void buzzer_deinit(void);