The only lights required in flight by law (I think) are a beacon and Nav lights. Therefore it should be entirely at pilots descretion what lights he needs. During a LVP Autoland it should not be that unusual to switch off Landing and Strobe lights as these can be very distacting and serve no perpose. No other aircraft is going to see your lights when you in cloud anyway.
Conclusion: If the landing lights are bothering you in cloud, switch them off and switch them back on again for the landing if you wish.
DH