Release v0.33.0-preview.6

What's Changed

• fix(patch): cherry-pick 7837194 to release/v0.33.0-preview.5-pr-21487 to patch version v0.33.0-preview.5 and create version 0.33.0-preview.6 by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/21720

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.33.0-preview.5...v0.33.0-preview.6