Repository: tektoncd/pipeline (language: go)

Issue:
Pipelinerun instead of Taskrun as tag key in Tracing span
# Expected Behavior
The tag key should have the correct value of pipelinrun
# Actual Behavior
![image](https://github.com/tektoncd/pipeline/assets/686902/c6a8af6e-e4f7-47a7-9e77-d721a3f86fa2)

# Steps to Reproduce the Problem

1. Start tracing, first tag is incorrect in pipelinerun reconciler.
2.
3.

# Additional Info

- Kubernetes version:

  **Output of `kubectl version`:**

```
(paste your output here)
```

- Tekton Pipeline version:

main branch
v0.48.0
```
(paste your output here)
```


<!-- Any other additional information -->



Discussion / hints:

Fix patch:
diff --git a/pkg/reconciler/pipelinerun/tracing.go b/pkg/reconciler/pipelinerun/tracing.go
index b5c152302e8..ba7f1c5e41b 100644
--- a/pkg/reconciler/pipelinerun/tracing.go
+++ b/pkg/reconciler/pipelinerun/tracing.go
@@ -65,7 +65,7 @@ func initTracing(ctx context.Context, tracerProvider trace.TracerProvider, pr *v
 	// Create a new root span since there was no parent spanContext provided through annotations
 	ctxWithTrace, span := tracerProvider.Tracer(TracerName).Start(ctx, "PipelineRun:Reconciler")
 	defer span.End()
-	span.SetAttributes(attribute.String("taskrun", pr.Name), attribute.String("namespace", pr.Namespace))
+	span.SetAttributes(attribute.String("pipelinerun", pr.Name), attribute.String("namespace", pr.Namespace))
 
 	pro.Inject(ctxWithTrace, propagation.MapCarrier(spanContext))
 


Test patch: