Release v0.15.0-preview.4

What's Changed

• fix(patch): cherry-pick 102905b to release/v0.15.0-preview.3-pr-12991 to patch version v0.15.0-preview.3 and create version 0.15.0-preview.4 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/13008

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.15.0-preview.3...v0.15.0-preview.4