EKF2 GPS blending: fall out of blending if one module lose 3D fix
EKF2 GPS blending: fall out of blending if one module lose 3D fix

Signed-off-by: CarlOlsson <6936519936097b0f4a0d231fda79eab84b282440@gmail.com>

krbeverx/Firmware,acfloria/Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,krbeverx/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,PX4/Firmware,PX4/Firmware,krbeverx/Firmware,PX4/Firmware,krbeverx/Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware