* Fix#16845
Maybe after PR #16712 , ffmpeg build with JP6 seem broken with error `/usr/lib/ffmpeg/jetson/bin/ffmpeg: error while loading shared libraries: libavdevice.so.60: cannot open shared object file: No such file or directory`
This PR fixes the issue
* Adding new LD entry for ffmpeg new location
* Update Dockerfile.arm64
* Move LD config to Dockerfile arm64 instead of detector