FEditLayerRendererState::GetSupportedTargetWeightmaps

Returns a list of all weightmaps supported by this renderer (only relevant for [ELandscapeToolTargetType::Weightmap](API\Runtime\Landscape\ELandscapeToolTargetType) (and [ELandscapeToolTargetType::Visibility](API\Runtime\Landscape\ELandscapeToolTargetType)))