Add sandbox ID to state file name

This allows to find all containers inside a sandbox more efficiently.
This operation is required every time a container starts and stops,
and previously required loading *all* container state files to check
whether the container belonged to the sandbox.

Apert from being inneficient, it has caused problems when state files
are stale or corrupt, causing inavalability to create any container.

Also adjust commands `list` and `debug` to skip over files that fail
to load.

Resolves #5052

PiperOrigin-RevId: 348050637

0 files changed, 0 insertions, 0 deletions