Unable to create sample labels dynamically

### Expected behavior

I would expect to create sample labels dynamically using JSR223 listener in groovy. Sample Label kept appearing same "JSR223 Sampler" but i expected dynamic label as per my custom groovy

### Actual behavior

unable to see custom label names. please see groovy below

### Steps to reproduce the problem

```
import org.apache.jmeter.samplers.SampleResult

def createSampleResult(String label, String message, String data, long startTime, long endTime) {
def result = new SampleResult()

result.setSampleLabel(label)
result.setStartTime(startTime)
result.setEndTime(endTime)
log.info("Start Time for ${label} should be: " + (new Date(startTime)).toString())
Thread.sleep(3000)
result.setResponseCode("200")
result.setSuccessful(true)
result.setResponseMessage(message)
result.setResponseData(data, "UTF-8")
log.info("${label} label after ending: " + result.getSampleLabel())

return result
}

def results = []
def teardownThreadGroup = {
// This is your loop
for (int i = 0; i < 10; i++) {
log.info("******************Sample Number ${i + 1}********************")
long startTime = System.currentTimeMillis()
Thread.sleep(5000) // simulate some delay
long endTime = System.currentTimeMillis()

SampleResult result = createSampleResult("Sample ${i + 1}", "This is message returned from JSR223 script for Sample ${i + 1}", "You will see this sentence in Response Data tab for Sample ${i + 1}", startTime, endTime)
results.add(result)
}
}

teardownThreadGroup()
// Return the last SampleResult
return results[-1]
```

### JMeter Version

latest

### Java Version

corretto 17

### OS Version

mac