az load test create should not required field test-id in CLI when set in yaml configuration file.

### Describe the bug

Even if a required field is present in the configuration file, the CLI should not prompt for it as a required input.

`testId: demosimpleloatst`

but current it throws error:
`
the following arguments are required: --test-id/-t`

### Related command

z load test create --load-test-resource $LOAD_TEST_RESOURCE -g $LOAD_TEST_RESOURCE_GROUP --load-test-config-file test.yaml --autostop disable

### Errors

the following arguments are required: --test-id/-t

### Issue script & Debug output

```yaml
version: v0.1
testId: demosimpleloatst
displayName: Sample Test
description: Load test website home page
testPlan: SampleTest.jmx
testType: JMX
engineInstances: 1
configurationFiles:
- 'sampledata.csv'
- 'testfragment.jmx'
zipArtifacts:
- bigdata.zip
```

### Expected behavior

when Load test configuration has ```testId``` value mentioned then cli should ask for testId in command line or we should remove it from config file

### Environment Summary

az --version
azure-cli 2.76.0 *

core 2.76.0 *
telemetry 1.1.0

Extensions:
load 2.1.0
ml 2.38.0
ssh 2.0.6

Dependencies:
msal 1.33.0b1
azure-mgmt-resource 23.3.0

### Additional context

_No response_