incusd/instance/qemu: Don't take over operations on console retrieval

This fixes an issue where we'd get both stopped and migrated events
during live-migration as the console retrieval happening during the
migration would mark the migration operation as completed, turning the
final stop operation into its own entity rather than completing the
migration operation.

Signed-off-by: Stéphane Graber <[email protected]>

internal/server/instance/drivers/driver_qemu.go

@@ -9322,7 +9322,10 @@ func (d *qemu) ConsoleLog() (string, error) {
 		return "", err
 	}
 
-	defer op.Done(nil)
+	// Only mark the operation as done if only processing the console retrieval.
+	if op.Action() == operationlock.ActionConsoleRetrieve {
+		defer op.Done(nil)
+	}
 
 	// Check if the agent is running.
 	monitor, err := qmp.Connect(d.monitorPath(), qemuSerialChardevName, d.getMonitorEventHandler(), d.QMPLogFilePath())