Fix CodeQL Swift product names

[MVPuknowme]

What changed

• Adds explicit HOST_APP_NAME, EXTENSION_SERVICE_NAME, and BUNDLE_IDENTIFIER_BASE overrides to the manual Swift CodeQL build.
• Keeps the existing Release configuration, signing-disabled extraction flow, workspace, and scheme unchanged.

Why

The Swift CodeQL job failed while embedding the ExtensionService app because its product-name variable resolved to an empty string in the CI build. Xcode consequently attempted to copy Build/Products/Release/.app, producing an lstat(.../.app): No such file or directory failure.

Impact

This gives the CodeQL extraction build deterministic product names without changing application runtime behavior or release signing configuration.

Validation

• Confirmed the original failure occurs in Build Swift project for CodeQL extraction.
• Confirmed checkout, CodeQL initialization, and Xcode selection complete successfully.
• Confirmed the failed copy source was .app while the expected embedded product is GitHub Copilot for Xcode Extension.app.
• Full validation is pending the pull-request GitHub Actions run on a macOS runner.

[github-actions]

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