Release v0.15.0-preview.2

What's Changed

• fix(patch): cherry-pick 7ec7845 to release/v0.15.0-preview.1-pr-12905 [CONFLICTS] by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/12962

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.15.0-preview.1...v0.15.0-preview.2