update default value for az network lb outbound-rule create --allocated-outbound-ports

### Describe the bug

Currently, the default value for --allocated-outbound-ports is 1024 when creating an outbound rule for Azure Load Balancer (az network lb outbound-rule create). This default value can be an issue for customers as it can cause SNAT port exhaustion depending how many instances they have deployed.

Request: change the default value to 0 which will also align with the powershell default value.

https://learn.microsoft.com/en-us/cli/azure/network/lb/outbound-rule?view=azure-cli-latest
https://learn.microsoft.com/en-us/powershell/module/az.network/add-azloadbalanceroutboundruleconfig?view=azps-13.4.0

### Related command

az network lb outbound-rule create --allocated-outbound-ports

change default of the above command to 0.

### Errors

The default value is currently 0 for allocated outbound ports.

### Issue script & Debug output

The current default value is 1024, need to update to 0.

### Expected behavior

Update default value to 0 allocated outbound ports.

### Environment Summary

azure-cli 2.71.0

### Additional context

_No response_