Make the DetachKeys configurable and add test coverage for interactive detach

[OneBlue]

Summary of the Pull Request

This change adds support for passing custom detach keys when starting a container, attaching to it, or starting an exec

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

This PR adds support for customizing Docker “detach keys” when starting/attaching to containers and when creating exec processes, and introduces a Windows test to validate interactive detach behavior.

Changes:

• Extends container Start/Attach and Exec flows to accept optional detach keys and forwards them to the Docker API (start/attach/exec).
• Updates client wrappers/callers to pass the new parameter (typically nullptr for default behavior).
• Adds a new InteractiveDetach WSLA test covering default/custom detach sequences and invalid detach key handling.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/windows/WSLATests.cpp	Updates existing start/attach calls for new signatures; adds InteractiveDetach test.
src/windows/wslc/services/ContainerService.cpp	Updates container Start call to pass nullptr for detach keys.
src/windows/wslasession/WSLAContainer.h	Updates WSLA container implementation method signatures to include detach keys.
src/windows/wslasession/WSLAContainer.cpp	Plumbs detach keys through Start/Attach/Exec to Docker client calls and exec request payload.
src/windows/wslasession/DockerHTTPClient.h	Adds HTTP status→HRESULT mapping helper; adds per-transaction tracing.
src/windows/wslasession/DockerHTTPClient.cpp	Adds detachKeys query param support for start/attach endpoints.
src/windows/wslaservice/inc/wslaservice.idl	Modifies COM interface method signatures to add detach keys parameters.
src/windows/wsladiag/wsladiag.cpp	Updates attach/start calls for new signatures.
src/windows/inc/docker_schema.h	Adds DetachKeys field to exec create schema.
src/windows/common/WSLAProcessLauncher.h / .cpp	Adds SetDetachKeys and forwards detach keys to container Exec.
src/windows/common/WSLAContainerLauncher.cpp	Updates Start call for new signature.
src/windows/WslcSDK/wslcsdk.cpp	Updates container Start call for new signature.

[OneBlue]

This was useful during debugging. I'd like to keep it

[benhillis]

nit: extra blank line