Add port range for remote connections in public documentation

[sevillal]

Documentation to update

• https://learn.microsoft.com/en-us/azure/machine-learning/how-to-access-azureml-behind-firewall?view=azureml-api-2&tabs=ipaddress%2Cpublic#scenario-visual-studio-code
• https://learn.microsoft.com/en-us/azure/ai-studio/how-to/configure-managed-network?tabs=azure-cli#scenario-use-visual-studio-code

Updates

Add a blue section with the "Important" tag like this:

With text: "You must allow network traffic to ports 8704 to 8710. The VS Code server dynamically selects the first available port within this range."

[sevillal]

Documentation has been updated.