Lyra Question about input config

When I update my Lyra copy project to UE5.1 , I found my input not work , i tracked code and original Lyra5.1 Project found the function UStormInputComponent::AddInputMappings had little different:

so seems in 5.0 they use AddPlayerMappableConfig() to add player mapping , in Lyra 5.1 they delete some code , only use AddPlayerMappedKey() to add player mapping , the issue is happend in there :

about that TMap CustomKeyboardConfig i don’t find any place to init it , but in Lyra5.1 it will have all mapping when you start game in editor , but in my LyraCopy project it’s empty , Does any know where config the CustomKeyboardConfig in Lyra5.1 ?