rc.vtol_defaults: reduce maximum jerk to 4.5 m/s³ based on testing feedback

@fury1895 reported very valuable feedback from testing
the acceleration feed-forward on VTOL:
> MPC_JERK_MAX 4.5 (from 5 on it felt too aggressive)
> MPC_JERK_AUTO 4
> some hovering, some transitions, and a mission. Everything good.
> I'd say you feel the difference in position mode and you see it in
> Auto modes. Great improvement!

ROMFS/px4fmu_common/init.d/airframes/13014_vtol_babyshark

@@ -71,8 +71,7 @@ then
 	param set MPC_ACC_HOR_MAX	2
 	param set MPC_ACC_UP_MAX	3
 	param set MC_AIRMODE 1
-	param set MPC_JERK_AUTO	8
-	param set MPC_JERK_AUTO	15
+	param set MPC_JERK_AUTO	4
 	param set MPC_LAND_SPEED 1
 	param set MPC_MAN_TILT_MAX 25
 	param set MPC_MAN_Y_MAX 40

ROMFS/px4fmu_common/init.d/rc.vtol_defaults

@@ -9,7 +9,6 @@ set VEHICLE_TYPE vtol
 
 if [ $AUTOCNF = yes ]
 then
-
 	# to minimize cpu usage on older boards limit inner loop to 400 Hz
 	param set IMU_GYRO_RATEMAX 400
 
@@ -23,6 +22,7 @@ then
 	param set MPC_XY_CRUISE 3
 	param set MPC_XY_VEL_MAX 4
 	param set MPC_Z_VEL_MAX_DN 1.5
+	param set MPC_JERK_MAX 4.5
 
 	param set NAV_ACC_RAD 3