Copilot CLI sets MCP environment variables but should inject the actual system environment variables instead

[doggy8088]

Describe the feature or problem you'd like to solve

I'd like to hide actual env var form the mcp config

Proposed solution

Example settings:

{"VAR1":"${env:VAR1}"}

Example prompts or workflows

N/A

Additional context

[doggy8088]

@patniko Any progress?