Jactive: libsensirion is needed after all

Screen rotation wasn't working without libsensirion. With libsesirion, there's a nag about
D/TemperatureHumiditySensor(  596): Library ID match: linked j1-8; engine: j1-8
D/SensirionCompensationEngine(  596): loading from library j1-8
D/SensirionCompensationEngine(  596): could not find submodel cm_jactivelte
D/SensirionCompensationEngine(  596): loading engine failed
E/TemperatureHumiditySensor(  596): Error instantiating compensation engine

Otherwise things work well.