Release v0.12.0-preview.11

What's Changed

• fix(patch): cherry-pick fd2cbac to release/v0.12.0-preview.9-pr-12399 [CONFLICTS] by @gemini-cli-robot in https://github.com/google-gemini/gemini-cli/pull/12488
• fix: cherry-pick commits for release by @abhipatel12 in https://github.com/google-gemini/gemini-cli/pull/12549
• Cherry pick screen reader nudge changes by @chrstnb in https://github.com/google-gemini/gemini-cli/pull/12553

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.12.0-preview.9...v0.12.0-preview.11