fix replaceSlot can not use blendMode
fix replaceSlot can not use blendMode

seem-sky/DragonBonesCPP,DragonBones/DragonBonesCPP,lite3/DragonBonesCPP,lite3/DragonBonesCPP,DragonBones/DragonBonesCPP,lite3/DragonBonesCPP,seem-sky/DragonBonesCPP,dhb118/DragonBonesCPP,dhb118/DragonBonesCPP,brbranch/DragonBonesCPP,brbranch/DragonBonesCPP,dhb118/DragonBonesCPP,dhb118/DragonBonesCPP,seem-sky/DragonBonesCPP,seem-sky/DragonBonesCPP,dhb118/DragonBonesCPP,lite3/DragonBonesCPP,lite3/DragonBonesCPP,seem-sky/DragonBonesCPP