iox-#1036 Only set the priority ceiling when priority if protect
iox-#1036 Only set the priority ceiling when priority if protect

Signed-off-by: Christian Eltzschig <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@elchris.org>

eclipse-iceoryx/iceoryx,eclipse-iceoryx/iceoryx,eclipse-iceoryx/iceoryx,eclipse-iceoryx/iceoryx