Add container ID to WSLA_CONTAINER so the CLI doesn't require a WslaContainer reference during simple wslc container list

[OneBlue]

Summary of the Pull Request

This change adds ID to the list of returned fields when listing a container, which fixes list for containers without names and allows a simpler implementation of the simple case for List()

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 extends the WSLA container listing data contract to include the container ID, allowing wslc to list containers (including unnamed ones) without opening/inspecting each container.

Changes:

• Adds Id to the WSLA_CONTAINER struct returned by IWSLASession::ListContainers.
• Populates WSLA_CONTAINER::Id in WSLASession::ListContainers.
• Updates wslc’s ContainerService::List() to use the returned Id directly and updates tests to validate Id is present.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/windows/WSLATests.cpp	Adds an assertion that returned WSLA_CONTAINER entries include a full-length ID.
src/windows/wslc/services/ContainerService.cpp	Switches container listing to use WSLA_CONTAINER::Id instead of opening/inspecting containers.
src/windows/wslasession/WSLASession.cpp	Fills the new Id field when constructing the WSLA_CONTAINER array.
src/windows/wslaservice/inc/wslaservice.idl	Adds Id to WSLA_CONTAINER and relocates the WSLAContainerId typedef near container types.