Updating access unit boundary detection to the POC location change and other PH changes
Merged
requested to merge jonatan/VVCSoftware_VTM:isSliceNaluFirstInAU_fixes_for_PH_changes into master
The access unit boundary detection performed using DecLib::isSliceNaluFirstInAU is updated to the PH changes (PH-in-SH and POC-LSB in PH)