Move PLEG event generation back to sbserver to avoid missing pod sandbox status

Signed-off-by: ruiwen-zhao <ruiwen@google.com>

pkg/cri/sbserver/events.go

@@ -434,8 +434,6 @@ func handleSandboxExit(ctx context.Context, e *eventtypes.TaskExit, sb sandboxst
 				}
 				// Move on to make sure container status is updated.
 			}
-
-			c.generateAndSendContainerEvent(ctx, sb.ID, sb.ID, runtime.ContainerEventType_CONTAINER_STOPPED_EVENT)
 		}
 	}
 
@@ -449,7 +447,7 @@ func handleSandboxExit(ctx context.Context, e *eventtypes.TaskExit, sb sandboxst
 
 	// Using channel to propagate the information of sandbox stop
 	sb.Stop()
-
+	c.generateAndSendContainerEvent(ctx, sb.ID, sb.ID, runtime.ContainerEventType_CONTAINER_STOPPED_EVENT)
 	return nil
 }