fix(signal): prevent cancel after context is done

Update the signal handling goroutine to avoid calling cancel if the context
has already been completed. This prevents unnecessary cancellation and
ensures proper cleanup when the context is already done.

Author: Ajnasz

loggly.go

@@ -212,8 +212,12 @@ func contextWithInterrupt(ctx context.Context) (context.Context, context.CancelF
 	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
 
 	go func() {
-		<-sigChan
-		cancel()
+		select {
+		case <-ctx.Done():
+			return
+		case <-sigChan:
+			cancel()
+		}
 	}()
 	return ctx, cancel
 }