Add timeline for breaking changes in raw-menu-anchor-close-order (#13287)

_Description of what this PR is changing or adding, and why:_
Adds a timeline for breaking changes in raw-menu-anchor-close-order. I
didn't fill in the stable version yet -- should I?

_PRs or commits this PR depends on (if any):_
flutter/flutter#182357

Author: davidhicks980

src/content/release/breaking-changes/raw-menu-anchor-close-order.md

@@ -119,6 +119,11 @@ RawMenuAnchor(
 This migration is not supported by `dart fix`
 :::
 
+## Timeline
+
+Landed in version: 3.44.0-0.1.pre<br>
+In stable release: TBD
+
 ## References
 
 API documentation: