Update CHANGELOG.md for 3.44.9 (#190621)
#190184 <- omitted in the changelog, not an end user facing change. #190550 If this change needs to override an active code freeze, provide a comment explaining why. The code freeze workflow can be overridden by code reviewers. See pinned issues for any active code freezes with guidance. Note: The Flutter team is currently trialing the use of Gemini Code Assist for GitHub. Comments from the gemini…