Set container cursor

[AmelBawa-msft]

Summary of the Pull Request

• Set container cursor

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

Adds a small RAII helper to ensure the Windows console cursor is visible while relaying an interactive container TTY session, restoring the previous cursor state when the relay ends.

Changes:

• Introduce ScopedCursorVisibility to capture/restore CONSOLE_CURSOR_INFO and force cursor visibility during interactive relay.
• Instantiate the new helper at the start of ConsoleService::RelayInteractiveTty.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.