Fix docker auto restart issue (#21426)

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#### Why I did it
if critical process crashes or killed, bmp docker container will not be auto-restarted.

##### Work item tracking
- Microsoft ADO **(number only)**:30807821

#### How I did it
/usr/bin/supervisor-proc-exit-listener takes in charge of critical process monitor and event publish, thus it should be autorestar-ted in any case, otherwise there might be issue if supervisor-proc-exit-listener crashes, or in some test cases like
"docker exec bmp kill -SIGKILL -1" critical processes may not work correctly in some race condition (depends on whether supervisor-proc-exit-listener is the last one to be killed)

When a container receives the SIGKILL signal to terminate its processes, the order in which the processes are actually terminated can depend on the scheduling and resource availability within the container.

Scheduling: Within a container, processes are scheduled by the operating system or container runtime. The order in which the processes are scheduled to run can impact the order of termination. The scheduler determines which process gets executed first, and this can vary depending on factors such as process priorities, resource availability, and the scheduling algorithm used.
Resource Availability: Containers share resources such as CPU, memory, and disk I/O. When a SIGKILL signal is sent to all processes, the available resources might be limited or constrained. The order in which processes get terminated can be affected by resource contention. If resources are heavily utilized, some processes might be prioritized for termination over others due to resource constraints.

as a result of this, if supervisor-proc-exit-listener is killed first before critical process, container auto restart will not be launched as expected.

#### How to verify it
![image](https://github.com/user-attachments/assets/1ca1c2ed-7718-4132-8195-34c9fee380fe)

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Author: mssonicbld

dockers/docker-sonic-bmp/supervisord.conf

@@ -16,7 +16,7 @@ buffer_size=1024
 command=/usr/bin/supervisor-proc-exit-listener --container-name bmp
 events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
 autostart=true
-autorestart=false
+autorestart=unexpected
 buffer_size=1024
 
 [program:rsyslogd]

dockers/docker-sonic-gnmi/supervisord.conf

@@ -16,7 +16,7 @@ buffer_size=1024
 command=/usr/bin/supervisor-proc-exit-listener --container-name gnmi
 events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
 autostart=true
-autorestart=false
+autorestart=unexpected
 buffer_size=1024
 
 [program:rsyslogd]

dockers/docker-sonic-restapi/supervisord.conf

@@ -16,7 +16,7 @@ buffer_size=1024
 command=/usr/bin/supervisor-proc-exit-listener --container-name restapi
 events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
 autostart=true
-autorestart=false
+autorestart=unexpected
 buffer_size=1024
 
 [program:rsyslogd]

dockers/docker-sonic-telemetry/supervisord.conf

@@ -16,7 +16,7 @@ buffer_size=1024
 command=/usr/bin/supervisor-proc-exit-listener --container-name telemetry
 events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
 autostart=true
-autorestart=false
+autorestart=unexpected
 buffer_size=1024
 
 [program:rsyslogd]