Backports be5d1261b4
* mountNotifySocket consulted c.notifySocket, which was never populated.
Use persisted c.config.SdNotifySocket instead so the path matches
conmon's --sdnotify-socket and survives container restarts.
* Add WithSdNotifySocket and have MakeContainer read NOTIFY_SOCKET from
the environment when sdnotify mode is container.
* Related to upstream be5d1261b4 (libpod: Move mountNotifySocket to
container_internal_common.go), which introduced the shared
mountNotifySocket path this wiring completes.
Created/Modified with the assistance of AI: Cursor <Auto>
Signed-off-by: Chris Evich <cevich@redhat.com>