Release v0.19.0-preview.1

What's Changed

• fix(patch): cherry-pick 576fda1 to release/v0.19.0-preview.0-pr-14099 [CONFLICTS] by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/14402

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.19.0-preview.0...v0.19.0-preview.1