preferences: fix always recording setting

src/manager.cpp

src/media/audio/audio_receive_thread.cpp

src/media/audio/audio_receive_thread.h

src/media/audio/audio_rtp_session.cpp

src/media/rtp_session.h

src/media/video/video_input.cpp

src/media/video/video_receive_thread.cpp

src/media/video/video_receive_thread.h

src/media/video/video_rtp_session.cpp

src/sip/sipcall.cpp

src/sip/sipcall.h