Release v0.46.0

What's Changed

• fix(core): harden PTY resize against native crashes by @scidomino in #27496
• Changelog for v0.45.0-preview.0 by @gemini-cli-robot in #27495
• Changelog for v0.44.0 by @gemini-cli-robot in #27569
• fix(cli): prevent spam loop when preferredEditor is invalid by @Niralisj in #25324
• Adding quote by @scidomino in #27571
• Transition to flash GA model when experiment flag is present. by @DavidAPierce in #27570
• chore(ci): add optimized PR size labeler and batch workflows by @sripasg in #27616
• fix(ci): use pull_request_target trigger to grant write access on fork PRs by @sripasg in #27637
• fix(patch): cherry-pick e4315b3 to release/v0.46.0-preview.0-pr-27645 to patch version v0.46.0-preview.0 and create version 0.46.0-preview.1 by @gemini-cli-robot in #27655
• fix(patch): cherry-pick f40498d to release/v0.46.0-preview.1-pr-27676 to patch version v0.46.0-preview.1 and create version 0.46.0-preview.2 by @gemini-cli-robot in #27699
• fix(patch): cherry-pick f08b4af to release/v0.46.0-preview.2-pr-27749 to patch version v0.46.0-preview.2 and create version 0.46.0-preview.3 by @gemini-cli-robot in #27768

Full Changelog: v0.45.3...v0.46.0