Generate custom container name on empty input

[yao-msft]

Summary of the Pull Request

When containerOptions.Name is empty, generate our own container name.

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

Added tests.

[Copilot]

Pull request overview

This PR changes WSLC container creation so that when a caller does not provide a container name, the service generates a human-readable name (using a descriptor + mountain word list), and adds tests that validate the generated name format and uniqueness.

Changes:

• Add descriptor/mountain word lists for generated container names.
• Generate a unique container name during WSLCSession::CreateContainer() when no name is provided.
• Expand WSLC tests to validate the generated name format and uniqueness; update test include paths accordingly.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
src/windows/wslcsession/WSLCSession.cpp	Adds container name generation helpers and injects generated names into container creation when name is absent.
src/windows/wslcsession/ContainerNameGenerator.h	Introduces the descriptor/mountain constants used for name generation and test validation.
test/windows/WSLCTests.cpp	Adds coverage for generated-name format and uniqueness when creating unnamed containers.
test/windows/CMakeLists.txt	Adds include path so tests can include the new name constants header.