[aarch64] Add PT Docker build image for aarch64 (#106881)
# Changes
* Update `generate_binary_build_matrix.py` for aarch64 to use `pytorch/manylinuxaarch64-builder:cpu` when it is created
* Executed `generate_binary_build_matrix.py` to update `generated-linux-aarch64-binary-manywheel-nightly.yml`
Aarch64 build/test will fail till the new docker image is available for consmption.
Builder PR to build docker image : https://github.com/pytorch/builder/pull/1472
This switches nightly to use the docker build : https://hud.pytorch.org/hud/pytorch/pytorch/nightly/1?per_page=50&name_filter=aarch64
Pull Request resolved: https://github.com/pytorch/pytorch/pull/106881
Approved by: https://github.com/atalman
